Lothar Ley
Prof. Dr. Lothar Ley
Publikationen:
2021
Correlation between electronic micro-roughness and surface topography in two-dimensional surface conducting hydrogen-terminated diamond
In: Diamond and Related Materials 116 (2021), Art.Nr.: 108377
ISSN: 0925-9635
DOI: 10.1016/j.diamond.2021.108377 , , , , , , , , :
2020
Attosecond-fast internal photoemission
In: Nature Photonics 14 (2020), S. 219–222
ISSN: 1749-4885
DOI: 10.1038/s41566-019-0580-6
URL: https://arxiv.org/abs/2001.02989 , , , , , , :
Development of a silicon-diamond interface on (111) diamond
In: Applied Physics Letters 116 (2020), Art.Nr.: 071602
ISSN: 0003-6951
DOI: 10.1063/1.5144093 , , , , , , , , , :
Strong spin-orbit interaction induced by transition metal oxides at the surface of hydrogen-terminated diamond
In: Carbon 164 (2020), S. 244-250
ISSN: 0008-6223
DOI: 10.1016/j.carbon.2020.03.047 , , , , , , , , :
Engineering the spin-orbit interaction in surface conducting diamond with a solid-state gate dielectric
In: Applied Physics Letters 116 (2020)
ISSN: 0003-6951
DOI: 10.1063/5.0005690 , , , , , , , :
MoO3 induces p-type surface conductivity by surface transfer doping in diamond
In: Applied Surface Science 509 (2020), Art.Nr.: 144890
ISSN: 0169-4332
DOI: 10.1016/j.apsusc.2019.144890 , , , , , , , , , , , , :
2019
G -factor and well-width fluctuations as a function of carrier density in the two-dimensional hole accumulation layer of transfer-doped diamond
In: Physical Review B 99 (2019), Art.Nr.: 035159
ISSN: 2469-9950
DOI: 10.1103/PhysRevB.99.035159 , , , , , , :
Universal Work Function of Metal Oxides Exposed to Air
In: Advanced Materials Interfaces (2019), Art.Nr.: 1802058
ISSN: 2196-7350
DOI: 10.1002/admi.201802058 , , , , , , , , , , :
2013
Calculating the Universal Energy Level Alignment of Organic Molecules on Metal Oxides
In: Advanced Functional Materials 23 (2013), S. 794
ISSN: 1616-301X
DOI: 10.1002/adfm.201201412 , , , :
Diamond surfaces with air-stable negative electron affinity and giant electron yield enhancement
In: Advanced Functional Materials 23 (2013), S. 5608-5614
ISSN: 1616-301X
DOI: 10.1002/adfm.201301424 , , , , , , , :
Charge transfer doping of Silicon
In: Physical Review Letters n/a (2013), S. n/a
ISSN: 0031-9007
DOI: 10.1103/PhysRevLett.112.155502 , , , , , , , , , :
2012
Diamond Surfaces
In: Surface and Interface Science, Weinheim, Germany: Wiley-VCH, 2012, S. 889-940 , :
2011
Surface band bending and electron affinity as a function of hole accumulation density in surface conducting diamond
In: Applied Physics Letters 88 (2011), S. 102101
ISSN: 0003-6951
DOI: 10.1063/1.3561760 , , , , , , :
2010
Characteristics of solution gated field effect transistors on the basis of epitaxial graphene on silicon carbide
In: Journal of Physics D-Applied Physics 43 (2010), S. 345303
ISSN: 0022-3727
DOI: 10.1088/0022-3727/43/34/345303 , , , , , :
Atomic layer deposited aluminum oxide films on graphite and graphene studied by XPS and AFM
In: Physica Status Solidi (C) Current Topics in Solid State Physics 7 (2010), S. 398
ISSN: 1862-6351
DOI: 10.1002/pssc.200982496 , , , , , , :
Quasi-freestanding Graphene on SiC(0001)
In: Materials Science Forum 645-648 (2010), S. 629-632
ISSN: 0255-5476
DOI: 10.4028/www.scientific.net/MSF.645-648.629 , , , , , , , , :
Ozone-Mediated Polymerization of Fullerene and Fluorofullerene Thin Films
In: Journal of Physical Chemistry C 114 (2010), S. 4317
ISSN: 1932-7447
DOI: 10.1021/jp9105635 , , :
Influence of the growth conditions of epitaxial graphene on the film topography and the electron transport properties
In: Physica E-Low-Dimensional Systems & Nanostructures 42 (2010), S. 687-690
ISSN: 1386-9477
DOI: 10.1016/j.physe.2009.11.006 , , , , , :
2009
Towards wafer-size graphene layers by atmospheric pressure graphitization of silicon carbide
In: Nature Materials 8 (2009), S. 203-207
ISSN: 1476-1122
DOI: 10.1038/NMAT2382 , , , , , , , , , , , , , , :
Low-temperature ballistic transport in nanoscale epitaxial graphene cross junctions
In: Applied Physics Letters 95 (2009), Art.Nr.: 262101
ISSN: 0003-6951
DOI: 10.1063/1.3276560 , , , , , :
2008
Characterization of defects in silicon carbide by Raman spectroscopy
In: physica status solidi (b) 254 (2008), S. 1356
ISSN: 0370-1972
DOI: 10.1002/pssb.200844052 , , , :
Atomic and electronic structure of few-layer graphene on SiC(0001) studied with scanning tunneling microscopy and spectroscopy
In: Physical Review B 77 (2008), S. 155426
ISSN: 1098-0121
DOI: 10.1103/PhysRevB.77.155426 , , , , , , :
Molecular and electronic structure of PTCDA on bilayer graphene on SiC(0001) studied with scanning tunneling microscopy
In: physica status solidi (b) 245 (2008), S. 2064-2067
ISSN: 0370-1972
DOI: 10.1002/pssb.200879615 , , , , :
Influence of ambient humidity on the surface conductivity of hydrogenated diamond
In: Diamond and Related Materials 17 (2008), S. 1356
ISSN: 0925-9635
DOI: 10.1016/j.diamond.2008.01.063 , , , , , :
Hydrogen-terminated diamond electrodes: I. Charges, potentials, energies
In: Physical Review E 78 (2008), S. 041602
ISSN: 1539-3755
DOI: 10.1103/PhysRevE.78.041602 , , :
Raman spectra of epitaxial graphene on SiC(0001)
In: Applied Physics Letters 92 (2008), S. 201918
ISSN: 0003-6951
DOI: 10.1063/1.2929746 , , , , , :
Graphene layers on silicon carbide studied by Raman spectroscopy
In: Materials Science Forum 600-603 (2008), S. 567
ISSN: 0255-5476
DOI: 10.4028/www.scientific.net/MSF.600-603.567 , , , , :
Hydrogen-terminated diamond electrodes: II. Redox activity
In: Physical Review E 78 (2008), S. 041603
ISSN: 1539-3755
DOI: 10.1103/PhysRevE.78.041603 , , :
2007
Ordered arrangement of 9-aminoanthracene on Au(1 1 1) surfaces: A scanning tunneling microscopy study
In: Surface Science 601 (2007), S. 5533-5539
ISSN: 0039-6028
DOI: 10.1016/j.susc.2007.09.023 , , , , :
Growth of cubic SiC single crystals by the physical vapor transport technique
In: Journal of Crystal Growth 308 (2007), S. 241-246
ISSN: 0022-0248
DOI: 10.1016/j.jcrysgro.2007.07.060 , , , , , , , , :
2006
Nucleophilic-alkylation-reoxidation: A functionalization sequence for single-wall carbon nanotubes
In: Journal of the American Chemical Society 128 (2006), S. 6683-6689
ISSN: 0002-7863
DOI: 10.1021/ja0607281 , , , , , , , , :
Quantitative determination of oxidative defects on single walled carbon nanotubes
In: physica status solidi (b) 243 (2006), S. 3217-3220
ISSN: 0370-1972
DOI: 10.1002/pssb.200669128 , , , :
Functionalization of single-walled carbon nanotubes by aromatic molecules studied by scanning tunneling microscopy
In: physica status solidi (b) 243 (2006), S. 3213-3216
ISSN: 0370-1972
DOI: 10.1002/pssb.200669125 , , , , :
Electronic Raman Studies of Shallow Donors in Silicon Carbide
In: Materials Science Forum 527-529 (2006), S. 579
ISSN: 0255-5476
DOI: 10.4028/www.scientific.net/MSF.527-529.579 , , , , , , , , , :- Strobel Paul, Ristein Jürgen, Ley Lothar, Seppelt K., Goldt I.V., Boltalina Olga:
Surface conductivity induced by fullerenes on diamond: passivation and thermal stability
In: Diamond and Related Materials 15 (2006), S. 720
ISSN: 0925-9635
DOI: 10.1016/j.diamond.2005.10.034 - Ley Lothar, Ristein Jürgen, Maier Frederic, Riedel Marc, Strobel Paul:
Surface conductivity of diamond: a novel transfer doping mechanism
In: Physica B-Condensed Matter 376-377 (2006), S. 262
ISSN: 0921-4526
DOI: 10.1016/j.physb.2005.12.068
Surface conductivity of diamond: a novel doping mechanism
In: Advances in Science and Technology 48 (2006), S. 93
ISSN: 1662-8969 , , :
2005
Fuctionalization of single-walled carbon nanotubes with organo-lithium compounds: A combined XPS, STM, and AFM study
In: Electronic Properties of Novel Nanostructures, American Institute of Physics, 2005, S. 248-251 (AIP Conf. Proc., Bd.786)
DOI: 10.1063/1.2103863 , , , , , :
Facile solubilization of single walled carbon nanotubes using a urea melt process
In: Electronic Properties of Novel Nanostructures, American Institute of Physics, 2005, S. 207-210 (AIP Conf. Proc., Bd.786)
DOI: 10.1063/1.2103853 , , , , , , :- Strobel Paul, Riedel Marc, Ristein Jürgen, Ley Lothar, Boltalina Olga:
Surface transfer doping of diamond by fullerene
In: Diamond and Related Materials 14 (2005), S. 451
ISSN: 0925-9635
DOI: 10.1016/j.diamond.2004.12.051
2004
- Püsche Roland, Hundhausen Martin, Ley Lothar, Semmelroth Kurt, Schmid Frank, Pensl Gerhard, Nagasawa H.:
Characterization of cubic bulk SiC and temperature induced polytype conversion in cubic CVD SiC studied by Raman spectroscopy
In: Journal of Applied Physics 96 (2004), S. 5569
ISSN: 1089-7550 - Püsche R., Hundhausen Martin, Ley Lothar, Semmelroth Kurt, Schmid Frank, Pensl Gerhard, Nagasawa H.:
Study of the temperature induced polytype conversion in cubic SiC by Raman spectroscopy
In: Materials Science Forum 457-460 (2004), S. 617
ISSN: 0255-5476 - Püsche R., Hundhausen Martin, Ley Lothar, Semmelroth K., Schmid F., Pensl Gerhard:
Temperature induced polytype conversion in cubic silicon carbide studied by Raman spectroscopy
In: Journal of Applied Physics 96 (2004), S. 5569
ISSN: 0021-8979
DOI: 10.1063/1.1803924 - Semmelroth Kurt, Krieger Michael, Pensl Gerhard, Nagasawa H., Püsche R., Hundhausen Martin, Ley Lothar, Nerding M., Strunk H. P.:
Growth of 3C-SiC Bulk Material by the Modified Lely-Method
In: Materials Science Forum 457-460 (2004), S. 151
ISSN: 0255-5476 - Ristein Jürgen, Riedel Marc, Ley Lothar:
Electrochemical surface transfer doping: the mechanism behind the surface conductivity of hydrogen terminated diamond
In: Journal of The Electrochemical Society 151 (2004), S. E315
ISSN: 0013-4651
DOI: 10.1149/1.1785797 - Riedel Marc, Ristein Jürgen, Ley Lothar:
Recovery of surface conductivity of H-terminated diamond after thermal annealing in vacuum
In: Physical Review B 69 (2004), S. 125338
ISSN: 0163-1829 - Strobel Paul, Riedel Marc, Ristein Jürgen, Ley Lothar:
Surface transfer doping of diamond
In: Nature 430 (2004), S. 439
ISSN: 0028-0836
DOI: 10.1038/nature02751 - Riedel Marc, Ristein Jürgen, Ley Lothar:
The Impact of Ozone on the Surface Conductivity of Single Crystal Diamond
In: Diamond and Related Materials 13 (2004), S. 746
ISSN: 0925-9635
DOI: 10.1016/j.diamond.2003.11.094
2003
Covalent Functionalization of Arc Discharge, Laser Ablation and HiPCO Single‐Walled Carbon Nanotubes
In: H. Kuzmany, J. Fink, M. Mehring, S. roth (Hrsg.): Molecular Nanostructures, 2003, S. 291-296 (AIP Conf. Proc.)
DOI: 10.1063/1.1628037
URL: http://adsabs.harvard.edu/abs/2003AIPC..685..291A , , , , , , , , , :- Wellmann P.J., Herro Z, Selder M., Durst Franz, Püsche R., Hundhausen Martin, Ley Lothar, Winnacker Albrecht:
Investigation of mass transport during SiC PVT growth using digital X-Ray Imaging, 13C labeling of source material and numerical modeling
In: Materials Science Forum 433-436 (2003), S. 9
ISSN: 0255-5476
Doping of single-walled carbon nanotube bundles by Brønsted acids
In: Physical Chemistry Chemical Physics 5 (2003), S. 5472-5476
ISSN: 1463-9076
DOI: 10.1039/b311016h , , , , , , , :
The Purification of Single-Walled Carbon Nanotubes studied by X-ray induced Photoelectron Spectroscopy
In: H. Kuzmany, J. Fink, M. Mehring, S. Roth (Hrsg.): Molecular Nanostructures, 2003, S. 120-126
DOI: 10.1063/1.1628000
URL: http://adsabs.harvard.edu/abs/2003AIPC..685..120G , , , , , , :
Investigation of mass transport during PVT growth of SiC by 13C labeling of source material
In: Journal of Crystal Growth 258 (2003), S. 261-267
ISSN: 0022-0248
DOI: 10.1016/S0022-0248(03)01538-0 , , , , , , , :
Functionalization of single-walled carbon nanotubes with (R-)oxycarbonyl nitrenes
In: Journal of the American Chemical Society 125 (2003), S. 8566-8580
ISSN: 0002-7863
DOI: 10.1021/ja029931w , , , , , , , :- Püsche R., Hundhausen Martin, Ley Lothar:
Raman excitation profiles of 3C-, 4H-, 6H-, 15R- and 21R-SiC
In: Materials Science Forum 433-436 (2003), S. 325
ISSN: 0255-5476 - Herro Z., Wellmann P.J., Püsche R., Hundhausen Martin, Ley Lothar, Maier M., Masri P., Winnacker Albrecht:
Investigation of mass transport during PVT growth of SiC by 13C labelling of source material
In: Journal of Crystal Growth 258 (2003), S. 261
ISSN: 0022-0248
DOI: 10.1016/S0022-0248(03)01538-0 - Steeds J. W., Evans G. A., Furkert S., Ley Lothar, Hundhausen Martin, Schulze N., Pensl Gerhard:
Indentification of Dumb-Bell Shaped Interstitials in Electron Irradiated 6H-SiC by Photoluminescence Spectroscopy
In: Materials Science Forum 433-436 (2003), S. 305
ISSN: 0255-5476 - Ristein Jürgen, Riedel Marc, Ley Lothar, Takeuchi Daisuke, Okushi Hideyo:
Band diagrams of intrinsic and p-tye diamond with hydrogenated surfaces
In: physica status solidi (a) 199 (2003), S. 64
ISSN: 1862-6300 - Rezek Bohuslav, Sauerer C., Nebel C.E., Stutzmann M., Ristein Jürgen, Ley Lothar, Snidero E., Bergonzo P.:
Fermi level on hydrogen terminated diamond surfaces
In: Applied Physics Letters 82 (2003), S. 2266
ISSN: 0003-6951
DOI: 10.1063/1.1564293 - Takeuchi Daisuke, Riedel Marc, Ristein Jürgen, Ley Lothar:
Surface band bending and surface conductivity of hydrogenated diamond
In: Physical Review B 68 (2003), S. 41304(R)
ISSN: 0163-1829
Purification of Single‐Walled Carbon Nanotubes Studied by STM and STS
In: Molecular Nanostructures, 2003, S. 112-115
URL: http://scitation.aip.org/content/aip/proceeding/aipcp/10.1063/1.1627998 , , , , , , , , :
Investigation of mass transport during SiCPVT growth using digital X-ray imaging, C-13 labeling of source material and numerical modeling
In: Materials Science Forum 433-436 (2003), S. 9-12
ISSN: 0255-5476
DOI: 10.4028/www.scientific.net/MSF.433-436.9 , , , , , , , :
2002
The Effect of Addend Variation on the Solubility of Single-Wall Carbon Nanotubes
In: Structural and Electronic Prpoperties of Molecular Nanostructures, 2002, S. 92-95 (AIP Conf. Proc.)
DOI: 10.1063/1.1514081
URL: http://adsabs.harvard.edu/abs/2002aipc..633...92a , , , , , , :- Walter Sebastian, Bernhardt Jens, Starke Ulrich, Heinz Klaus, Maier Florian, Ristein Jürgen, Ley Lothar:
Geometry of the (2x1) reconstruction of diamond(111)
In: Journal of Physics: Condensed Matter 14 (2002), S. 3085-3092
ISSN: 0953-8984
URL: http://www.fkp.uni-erlangen.de/literatur/abstracts_kh/240.html
Characterization of oxidized SWCNTs by XPS
In: H. Kuzmany; J. Fink; M. Mehring; S. Roth; (Hrsg.): Structural and Electronic Properties of Molecular Nanostructures, 2002, S. 96-99
DOI: 10.1063/1.1514082 , , , , , , :- Herzog B., Rohmfeld S., Hundhausen Martin, Ley Lothar, Semmelroth K., Pensl Gerhard:
Experimental Determination of the Phonon-Eigenvectors of Silicon Carbide by Raman Spectroscopy
In: Materials Science Forum 389-393 (2002), S. 625
ISSN: 0255-5476 - S. Rohmfeld, Hundhausen Martin, Ley Lothar, C. A. Zorman, M. Mehregany:
Quantitative evaluation of biaxial strain in epitaxial 3 C- SiC layers on Si(100) substrates by Raman spectroscopy
In: Journal of Applied Physics 91 (2002), S. 1113
ISSN: 0021-8979 - Evans G. A., Steeds J. W., Ley Lothar, Hundhausen Martin, Schulze N., Pensl Gerhard:
Identification of carbon interstitials in electron irradiated 6H-SiC by use of a 13C enriched specimen
In: Physical Review B 66 (2002), S. 035204-1
ISSN: 0163-1829
Comment on "Effect of average grain size on the work function of diamond films"
In: Applied Physics Letters 81 (2002), S. 183
ISSN: 0003-6951 , :- Ristein Jürgen, Riedel Marc, Stammler Martin, Mantel Berthold F., Ley Lothar:
Surface conductivity of nitrogen-doped diamond
In: Diamond and Related Materials 11 (2002), S. 359
ISSN: 0925-9635
DOI: 10.1016/S0925-9635(02)00022-5
Growth of high-quality homoepitaxial diamond films by HF-CVD
In: Diamond and Related Materials 11 (2002), S. 504-508
ISSN: 0925-9635
DOI: 10.1016/S0925-9635(01)00627-6 , , , , , , , :
2001
Herstellung und Charakterisierung stickstoffreicher, qualitativ hochwertiger homo-epitaktischer Diamantfilme mittels Heißdraht-CVD
In: European Journal of Mineralogy 13 (2001), S. 48
ISSN: 0935-1221 , , , , , :- Schmidt JA, Hundhausen M, Ley L:
Analysis of the moving photocarrier grating technique for semiconductors of high defect density
In: Physical Review B 64 (2001)
ISSN: 0163-1829 - Rohmfeld Stefan, Hundhausen Martin, Ley Lothar, Schulze Norbert, Pensl Gerhard:
Isotope-Disorder-Induced Line Broadening of Phonons in the Raman Spectra of SiC
In: Physical Review Letters 86 (2001), S. 826
ISSN: 0031-9007
DOI: 10.1103/PhysRevLett.86.826 - Stark Tanja, L. Gutowski, M. Herden, H. Grunleitner, S. Kohler, Hundhausen Martin, Ley Lothar:
Ti-Silicide Formation During Isochronal Annealing Followed by in situ Ellipsometry
In: Microelectronic Engineering 55 (2001), S. 101
ISSN: 0167-9317
DOI: 10.1016/S0167-9317(00)00434-2 - Ristein Jürgen, Maier Florian, Riedel Marc, Stammler Markus, Ley Lothar:
Diamond surface conductivity experiments and photoelectron spectroscopy
In: Diamond and Related Materials 10 (2001), S. 416
ISSN: 0925-9635
DOI: 10.1016/S0925-9635(00)00555-0 - N. Sieber, B. Mantel, Seyller Thomas, Ristein Jürgen, Ley Lothar, T. Heller, D. R. Batchelor, D. Schmeisser:
Electronic and chemical passivation of hexagonal 6H-SiC surfaces by hydrogen termination
In: Applied Physics Letters 78 (2001), S. 1216
ISSN: 0003-6951
DOI: 10.1063/1.1351845 - Sieber N., Mantel Berthold F., Seyller Thomas, Ristein Jürgen, Ley Lothar:
Hydrogenation of 6H-SiC as a Surface Passivation Stable in Air
In: Diamond and Related Materials 10 (2001), S. 1291
ISSN: 0925-9635
DOI: 10.1016/S0925-9635(00)00529-X - Sieber N., Seyller Thomas, Mantel Berthold F., Ristein Jürgen, Ley Lothar:
Preparation and characterization of hydrogen terminated 6H-SiC
In: Materials Science Forum 353-356 (2001), S. 223
ISSN: 0255-5476 - Maier Frederic, Riedel Marc, Ristein Jürgen, Ley Lothar:
Spectroscopic Investigations of Diamond/Hydrogen/Metal and Diamond/Metal Interfaces
In: Diamond and Related Materials 10 (2001), S. 506
ISSN: 0925-9635
DOI: 10.1016/S0925-9635(00)00535-5 - Ristein Jürgen, Riedel Marc, Maier Frederic, Mantel Berthold F., Stammler Martin, Ley Lothar:
Surface Conductivity of Diamond as a Function of Nitrogen Doping
In: physica status solidi (a) 186 (2001), S. 249
ISSN: 1862-6300
DOI: 10.1002/1521-396X(200108)186:23.0.CO;2-6 - Ristein Jürgen, Riedel Marc, Maier Frederic, Mantel Berthold F., Stammler Martin, Ley Lothar:
Surface doping: a special feature of diamond
In: Journal of Physics: Condensed Matter 13 (2001), S. 8979
ISSN: 0953-8984
DOI: 10.1088/0953-8984/13/40/314 - Mantel Berthold, Stammler Markus, Ristein Jürgen, Ley Lothar:
The correlation between surface conductivity and adsorbate coverage on diamond as studied by infrared spectroscopy
In: Diamond and Related Materials 10 (2001), S. 429
ISSN: 0925-9635
DOI: 10.1016/S0925-9635(00)00601-4
Electron affinity of plasma-hydrogenated and chemically oxidized diamond (100) surfaces
In: Physical Review B 64 (2001), S. 165411
ISSN: 1098-0121 , , :
2000
- Stark Tanja, H. Grünleitner, Hundhausen Martin, Ley Lothar:
Deriving the kinetic parameters for Pt-silicide formation from temperature ramped in situ ellipsometric measurements
In: Thin Solid Films 358 (2000), S. 73-79
ISSN: 0040-6090
DOI: 10.1016/S0040-6090(99)00699-9 - Püsche Roland, S. Rohmfeld, Hundhausen Martin, Ley Lothar:
Disappearance of the LO-Phonon line in the Raman spectrum of 6H-SiC
In: Materials Science Forum 338-342 (2000), S. 583
ISSN: 0255-5476 - Rohmfeld Stefan, Hundhausen Martin, Ley Lothar, Schulze Norbert, Pensl Gerhard:
Isotope Effects on the Raman Spectrum of SiC
In: Materials Science Forum 338-342 (2000), S. 579
ISSN: 0255-5476 - Cui Jingbiao, Ristein Jürgen, Stammler Martin, Janischowsky Klemens, Kleber G., Ley Lothar:
Hydrogen termination and electron emission from CVD diamond surfaces: a combined SEM, PEEM, photoelectron yield, and field emission study
In: Diamond and Related Materials 9 (2000), S. 1143
ISSN: 0925-9635 - Cui Jingbiao, Stammler Martin, Ristein Jürgen, Ley Lothar:
The role of hydrogen for field emission from chemical vapour deposited diamond and nanocrystaline diamond powder
In: Journal of Applied Physics 88 (2000), S. 3667
ISSN: 1089-7550 - Ley Lothar, Ristein Jürgen, Graupner Ralf:
Comment on quantum confinement effect in diamond nanocrystals studied by x-ray-absorption spectroscopy
In: Physical Review Letters 84 (2000), S. 5679
ISSN: 0031-9007 - Sieber Norbert, Hollering Markus, Ristein Jürgen, Ley Lothar, J. Riley, R. Leckey:
Photoemission study of the silicate adlayer reconstruction on 6H-SiC(0001)
In: Materials Science Forum 338-342 (2000), S. 391
ISSN: 0255-5476 - Ristein Jürgen, Cui Jingbiao, Graupner Ralf, Maier Frederic, Riedel Marc, Mantel Berthold F., Stammler Markus, Ley Lothar:
The role of adsorbates and defects on diamond surfaces
In: New Diamond and Frontier Carbon Technology 10 (2000), S. 363
ISSN: 1344-9931 - Maier Florian, Riedel Marc, Mantel B. , Ristein Jürgen, Ley Lothar:
Origin of surface conductivity in diamond
In: Physical Review Letters 85 (2000), S. 3472-5
ISSN: 0031-9007
DOI: 10.1103/PhysRevLett.85.3472 - Ristein Jürgen, Maier Florian, Riedel Marc, Cui Jingbiao, Ley Lothar:
Surface electronic properties of diamond
In: physica status solidi (a) 181 (2000), S. 65
ISSN: 1862-6300
DOI: 10.1002/1521-396X(200009)181:13.0.CO;2-Z
1999
- Maier Frederic, Graupner Ralf, Hollering Markus, Hammer Lutz, Ristein Jürgen, Ley Lothar:
The hydrogenated and bare diamond (110) surface: a combined LEED-, XPS-, and ARPES study
In: Surface Science 443 (1999), S. 177
ISSN: 0039-6028
DOI: 10.1016/S0039-6028(99)01010-9 - Zhou Shi-Ming, Hundhausen Martin, Stark Tanja, Chen L.Y., Ley Lothar:
Kinetics of platinum silicide formation followed in situ by spectroscopic ellipsometry
In: Journal of Vacuum Science & Technology A 17 (1999), S. 144
ISSN: 0734-2101 - Ley Lothar, Stark Tanja, Hundhausen Martin, Gruenleitner Holger:
Modeling the evolution of ellipsometric data during the thermally induced Pt-silicide formation: activation energies and prefactors
In Situ Process Diagnostics and Modelling (San Francisco, 6. April 1999 - 7. April 1999)
In: Symposium. Materials Research Society 1999 - Ley Lothar, Graupner Ralf, Cui Jingbiao, Ristein Jürgen:
Electronic properties of single crystalline diamond surfaces
In: Carbon 37 (1999), S. 793
ISSN: 0008-6223
DOI: 10.1016/S0008-6223(98)00273-5 - Ley Lothar, Mantel Berthold F., Matura K., Stammler Markus, Janischowsky Klemens, Ristein Jürgen:
Infrared spectroscopy of C-D vibrational modes on diamond (100) surfaces
In: Surface Science 427-428 (1999), S. 245
ISSN: 0039-6028
DOI: 10.1016/S0039-6028(99)00273-3 - Hollering Markus, Maier Florian, Sieber Norbert, Stammler Markus, Ristein Jürgen, Ley Lothar, A. Stampfl, J. Riley, R. Leckey:
Electronic states of an ordered oxide on C-terminated 6H-SiC
In: Surface Science 442 (1999), S. 531
ISSN: 0039-6028
DOI: 10.1016/S0039-6028(99)00998-X - Cui Jingbiao, Ristein Jürgen, Ley Lothar:
Dehydrogenation and the surface phase transition on diamond (111): kinetics and electronic structure
In: Physical Review B 59 (1999), S. 5847
ISSN: 0163-1829 - Cui Jingbiao, Graupner Ralf, Ristein Jürgen, Ley Lothar:
Electron affinity and band bending of the single crystal diamond (111) surface
In: Diamond and Related Materials 8 (1999), S. 792
ISSN: 0925-9635 - Cui Jingbiao, Ristein Jürgen, Ley Lothar:
Low threshold electron emission from diamond
In: Physical Review B 60 (1999), S. 16135
ISSN: 0163-1829 - Graupner Ralf, Ristein Jürgen, Ley Lothar, Jung Ch.:
Surface sensitive K-edge absorption spectroscopy of clean and hydrogen terminated diamond (111) and (100) surfaces
In: Physical Review B 60 (1999), S. 17023
ISSN: 0163-1829 - Stammler Martin, Ristein Jürgen, Habermann T., Janischowsky Klemens, Nau D., Müller Gerhard, Ley Lothar:
Field emission measurements with micrometre resolution on carbon nanostructures
In: Diamond and Related Materials 8 (1999), S. 792
ISSN: 0925-9635
1998
- S. Rohmfeld, Hundhausen Martin, Ley Lothar:
Raman scttering in polycrystalline 3C-SiC: influence of stacking faults
In: Physical Review B 58 (1998), S. 9858
ISSN: 1098-0121 - Graupner Ralf, Maier Florian, Ristein Jürgen, Ley Lothar:
High resolution surface sensitive C1s core level spectra of clean and hydrogen terminated diamond (100) and (111) surfaces
In: Physical Review B - Condensed Matter and Materials Physics 57 (1998), S. 12397
ISSN: 1550-235X - Ristein Jürgen, Stief R.T., Beyer Wolfgang Fritz, Ley Lothar:
A comparative analysis of a-C:H by infrared spectroscopy and mass selected thermal effusion
In: Journal of Applied Physics 84 (1998), S. 3836-3847
ISSN: 1089-7550
DOI: 10.1063/1.368563 - Cui Jingbiao, Ristein Jürgen, Ley Lothar:
Electron affinity of the bare and hydrogen covered single crystal diamond (111) surface
In: Physical Review Letters 81 (1998), S. 429-432
ISSN: 0031-9007
DOI: 10.1103/PhysRevLett.81.429 - Schäfer J, Ristein Jürgen, Miyazaki Seiichi, Ley Lothar:
Formation of the interface between c-Si(111) and diamond-like carbon studied with photoelectron spectroscopy
In: Applied Surface Science 123/124 (1998), S. 11
ISSN: 0169-4332 - Sieber N., Ristein Jürgen, Ley Lothar:
Mechanism of reaktive Ion etching of 6H-SiC in CHF3/O2 gas mixtures
In: Materials Science Forum 264-268 (1998), S. 825
ISSN: 0255-5476 - Cui Jingbiao, Amtmann K., Ristein Jürgen, Ley Lothar:
Non contact temperature measurements of diamond by Raman spectroscopy
In: Journal of Applied Physics 83 (1998), S. 7929
ISSN: 1089-7550 - Ristein Jürgen, Stein W., Ley Lothar:
Photoelectron yield spectroscopy on negative electron affinity diamond surfaces: a contactless unipolar transport experiment
In: Diamond and Related Materials 7 (1998), S. 626
ISSN: 0925-9635 - Ristein Jürgen, Schäfer J., Ley Lothar:
Valence band and gap state spectroscopy of amorphous carbon by photoelectron emission techniques
1st International Specialist Meeting on Amorphous Carbon (Singapore)
In: Amorphous Carbon:State of the Art, Singapore: 1998
1997
- Miyazaki Seiichi, Nishimura H., Fukuda M, Ley Lothar, Ristein Jürgen:
Structure and electronic states of ultrathin SiO2 thermally grown on Si(100) and Si(111) surfaces
In: Applied Surface Science 117/118 (1997), S. 32
ISSN: 0169-4332 - Ristein Jürgen, Stein W., Ley Lothar:
Defect Spectroscopy and Determination of the Electron Diffusion Length in Single Crystal Diamond by Total Photoelectron Yield Spectroscopy
In: Physical Review Letters 78 (1997), S. 1803-1806
ISSN: 0031-9007 - Graupner Ralf, Hollering Markus, Ziegler Anja, Ristein Jürgen, Ley Lothar, Stampfl A.:
Dispersion of surface states on diamond (100) and (111)
In: Physical Review B 55 (1997), S. 10841
ISSN: 0163-1829 - Schäfer J, Ristein Jürgen, Ley Lothar:
Electronic and structural properties of the interface between c-Si (111) and diamond like carbon
In: Diamond and Related Materials 6 (1997), S. 730
ISSN: 0925-9635 - Miyazaki Seiichi, Schäfer J., Ristein Jürgen, Ley Lothar:
Implication of hydrogen-induced boron passivation in wet-chemically cleaned Si(111):H
In: Applied Surface Science 117/118 (1997), S. 32
ISSN: 0169-4332 - Schäfer J, Ristein Jürgen, Miyazaki Seiichi, Ley Lothar:
Interface formation between hydrogen terminated Si (111) and amorphous hydrogenated carbon (a-C:H)
In: Journal of Vacuum Science & Technology A 15 (1997), S. 408
ISSN: 0734-2101
1996
The influence of diamond chemical vapour deposition coating parameters on the micro structure and properties of titanium substrates
In: Diamond and Related Materials 5 (1996), S. 304-307
ISSN: 0925-9635
URL: https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=0041686948&origin=inward , , , , , :- Hundhausen Martin, Nagy A., Ley Lothar:
High field transport in the inversion layer of amorphous silicon thin film transistors
In: Journal of Non-Crystalline Solids 198-200 (1996), S. 230
ISSN: 0022-3093
DOI: 10.1016/0022-3093(95)00718-0 - Hundhausen Martin, Ley Lothar, Witt C.:
Influence of space charges on the resonant photoconductor employing a moving laser inducde grating
In: Applied Physics Letters 69 (1996), S. 1746
ISSN: 0003-6951 - Teuschler Thomas, Mahr K., Miyazaki Seiichi, Hundhausen Martin, Ley Lothar:
Nanometer-scale modification of the tribological properties of Si(111):H surfaces performed and investigated by a conducting-probe scanning force microscope
In: Journal of Vacuum Science & Technology B: Microelectronics Processing and Phenomena 14 (1996), S. 1268
ISSN: 0734-211X - Hundhausen Martin, Ley Lothar, Witt C.:
Resonant photoconductor structures for the generation of microwave currents: Importance of space charges
23rd Int. Conf. on the Physics of Semiconductors (Berlin)
In: proc. 23rd Int. Conf. on the Physics of Semiconductors, Berlin: 1996 - Strauß Johannes, Hundhausen Martin, Ley Lothar:
Sensitive measurement of laser induced photocarrier gratings in semiconductors by optical heterodyne detection
23rd Int. Conf. on the Physics of Semiconductors (Berlin)
In: proc. 23rd Int. Conf. on the Physics of Semiconductors, Berlin: 1996 - Ley Lothar, Teuschler Ralf, Mahr K., Miyazaki Seiichi, Hundhausen Martin:
Kinetics of field induced oxidation of hydrogen terminated Si(111) by means of a scanning force micoscope
In: Journal of Vacuum Science & Technology B: Microelectronics Processing and Phenomena 14 (1996), S. 2845
ISSN: 0734-211X - Ley Lothar, Ristein Jürgen, Schäfer J., Miyazaki Seiichi:
New-surface dopant passivation after wet-chemical preparation of Si (111):H surfaces
In: Journal of Vacuum Science & Technology B 14 (1996), S. 3008
ISSN: 1071-1023 - Stöckel R., Janischowsky Klemens, Rohmfeld Stefan, Ristein Jürgen, Hundhausen Martin, Ley Lothar:
Growth of diamond on silicon during the bias pretreatment in chemically vapour deposition of polycristalline diamond films
In: Journal of Applied Physics 76 (1996), S. 768
ISSN: 1089-7550 - Leihkamm K., Wolf Markus, Ristein Jürgen, Ley Lothar:
Changes of the occupied density of defect states of a-Si:H upon illumination
In: Physical Review B 53 (1996), S. 4522
ISSN: 0163-1829 - Stief R., Schäfer J., Ristein Jürgen, Ley Lothar, Beyer Wolfgang Fritz:
Hydrogen bonding analysis in amorphous hydrogenated carbon by a combination of infrared absorption and thermal effusion experiments
In: Journal of Non-Crystalline Solids 198-200 (1996), S. 643
ISSN: 0022-3093
DOI: 10.1016/0022-3093(95)00779-2 - Schäfer J, Ristein Jürgen, Graupner Ralf, Ley Lothar, Stephan U., Frauenheim Thomas, Veerasamy V.S., Amaratunga Gehan A. J., Weiler M., Erhardt H.:
Photoemission study of amorphous carbon modifications and comparison with calculated densities of states
In: Physical Review B 53 (1996), S. 7762
ISSN: 0163-1829 - Miyazaki Seiichi, Schäfer J., Ristein Jürgen, Ley Lothar:
Surface Fermi level position of hydrogen passivated Si (111) surfaces
In: Applied Physics Letters 68 (1996), S. 1247
ISSN: 0003-6951
DOI: 10.1063/1.115941 - Graupner Ralf, Ristein Jürgen, Ziegler Anja, Hollering Markus, Ley Lothar:
Surface state dispersions on diamond (100) and (111) surfaces
In: the Physics of Semiconductors, Singapore: World Scientific, 1996, S. 843 - Schäfer J, Ristein Jürgen, Ley Lothar, Stephan U., Frauenheim Thomas:
The density of states of ta-C, ta-C:H and a-C:H as determined by x-ray excited photoelectron spectroscopy and molecular dynamics calculation
In: Journal of Non-Crystalline Solids 198-200 (1996), S. 641
ISSN: 0022-3093
DOI: 10.1016/0022-3093(95)00780-6
1995
- Haken U., Hundhausen Martin, Ley Lothar:
Analysis of the moving-photocarrier-grating technique for the determination of the mobility and lifetime of photocarriers in semiconductors
In: Physical Review B 51 (1995), S. 10579
ISSN: 0163-1829
DOI: 10.1103/PhysRevB.51.10579
Bipolar treatment of the electrically detected transient grating technique
In: Applied Physics Letters 67 (1995), S. 2518
ISSN: 0003-6951 , :- Weigelt G., Hundhausen Martin, Ley Lothar:
Is persistent photoconductivity in nipi-structures of amorphous silicon due to the Staebler Wronski e
In: Solid State Phenomena 44-46 (1995), S. 495
ISSN: 1012-0394 - Teuschler Thomas, Mahrt-Hülbig Karin, Miyazaki Seiichi, Hundhausen Martin, Ley Lothar:
Nanometerâscale modification of the tribological properties of Si(100) by scanning force microscope
In: Applied Physics Letters 66 (1995), S. 2499-2501
ISSN: 0003-6951
DOI: 10.1063/1.113146 - Teuschler Thomas, Mahrt-Hülbig Karin, Miyazaki Seiichi, Hundhausen Martin, Ley Lothar:
Nanometer-scale field-induced oxidation if Si(111): H by a conducting-probe scanning force microscope: Doping dependence and kinetics
In: Applied Physics Letters 67 (1995), S. 3144
ISSN: 0003-6951
DOI: 10.1063/1.114861 - Nagy A., Hundhausen Martin, Ley Lothar, Brunst G., Holzenkämpfer E.:
Steady-state hopping conduction in the conduction band tail of a-Si:H studied in thin
In: Physical Review B - Condensed Matter and Materials Physics 52 (1995), S. 11289
ISSN: 1550-235X - Stöckel R., Janischowsky Klemens, Rohmfeld Stefan, Ristein Jürgen, Hundhausen Martin, Ley Lothar:
Diamond growth during the bias pretreatment in microwave CVD of diamond
In: Diamond and Related Materials 5 (1995), S. 321
ISSN: 0925-9635 - Ristein Jürgen, Schäfer J., Ley Lothar:
Effektive correlation energies for defects in a-C:H from a comparison of photoelectron yield and electron spin resonance experiments
In: Diamond and Related Materials 4 (1995), S. 508
ISSN: 0925-9635 - Ristein Jürgen, Appelt C, Gertkemper T., Ley Lothar:
The influence of chemical annealing on the electronic properties of amorphous silicon
Hydrogenated Amorphous Silicon
In: Solid State Phenomena, Switzerland: 1995
1994
- Teuschler Thomas, Hundhausen Martin, Eckstein Ralf, Ley Lothar:
Cross-Sectional Scanning Tunneling and Scanning Force Microscopy of Amorphous Hydrogenated Silicon pn-Doping-Superlattices in Nitrogen and Air
In: Journal of Vacuum Science & Technology B: Microelectronics Processing and Phenomena 12 (1994), S. 2440
ISSN: 0734-211X - Teuschler Thomas, Hundhausen Martin, Ley Lothar:
Cross-sectional scanning-tunneling-spectroscopy of a-Si:H pn-doping superlattices
In: Superlattices and Microstructures 16 (1994), S. 271
ISSN: 0749-6036 - Teuschler Thomas, Hundhausen Martin, Ley Lothar:
Influence of light on individual defect noise in a-Si:H/a-SiNx:H double barrier structures
In: Journal of Applied Physics 75 (1994), S. 2690
ISSN: 0021-8979
DOI: 10.1063/1.356222 - Hundhausen Martin, Haken U., Ley Lothar:
Moving Photocarrier Grating Technique for Mobility and Lifetime Measurements in Amorphous Semiconductors
In: Materials Research Society Symposium - Proceedings 336 (1994), S. 353
ISSN: 0272-9172 - Graupner Ralf, Stöckel R., Janischowsky Klemens, Ristein Jürgen, Hundhausen Martin, Ley Lothar:
The influence of surface treatment on the electronic structure of CVD diamond films
In: Diamond and Related Materials 3 (1994), S. 891
ISSN: 0925-9635
DOI: 10.1016/0925-9635(94)90294-1 - Graupner Ralf, Ristein Jürgen, Ley Lothar:
Photoelectron spectroscopy of clean and hydrogen exposed diamond (111) surfaces
In: Surface Science 320 (1994), S. 201
ISSN: 0039-6028
DOI: 10.1016/0039-6028(94)00499-4
1993
- Teuschler Thomas, Hundhausen Martin, Ley Lothar, Arce R.:
Analysis of Random telegraph noise in large-area amorphous double-barrier structures
In: Physical Review B 47 (1993), S. 12687
ISSN: 0163-1829
DOI: 10.1103/PhysRevB.47.12687 - Haken U., Hundhausen Martin, Ley Lothar:
Carrier Mobility and Lifetime in a-Si:H determined by the Moving Grating Technique
In: Journal of Non-Crystalline Solids 164-166 (1993), S. 497
ISSN: 0022-3093
DOI: 10.1016/0022-3093(93)90598-R - Nagy A., Hundhausen Martin, Ley Lothar, Brunst G., Holzenkämpfer E.:
Field enhanced conductivity in a-Si:H thin film transistors
In: Journal of Non-Crystalline Solids 164-166 (1993), S. 529
ISSN: 0022-3093
DOI: 10.1016/0022-3093(93)90606-X - Haken U., Hundhausen Martin, Ley Lothar:
Moving Grating Technique: A New Method for the Determination of Electron and Hole Mobilities and their Lifetime
In: Applied Physics Letters 63 (1993), S. 3066
ISSN: 0003-6951
DOI: 10.1063/1.110260 - Xu S., Hundhausen Martin, Ristein Jürgen, Yan. B., Ley Lothar:
Influence of substrate bias on the properties of a-C:H films prepared by plasma CVD
In: Journal of Non-Crystalline Solids 164-166 (1993), S. 1127
ISSN: 0022-3093
DOI: 10.1016/0022-3093(93)91197-B - Stöckel R., Graupner Ralf, Janischowsky Klemens, Xu S., Ristein Jürgen, Hundhausen Martin, Ley Lothar:
Initial stages in the growth of polycrystalline diamond on silicon
In: Diamond and Related Materials 2 (1993), S. 1467
ISSN: 0925-9635
DOI: 10.1016/0925-9635(93)90014-S - Plass M.F., Ristein Jürgen, Ley Lothar:
Electronic and structural properties of the a-Si:H/a-SiNx:H interface
In: Journal of Non-Crystalline Solids 164-166 (1993), S. 195
ISSN: 0022-3093
DOI: 10.1016/0022-3093(93)91125-M - Schäfer J, Ristein Jürgen, Ley Lothar:
Electronic structure and defect density of states of hydrogenated amorphous carbon (a-C:H) as determined by photoelectron and photoelectron yield spectroscopy
In: Journal of Non-Crystalline Solids 164-166 (1993), S. 1123
ISSN: 0022-3093
DOI: 10.1016/0022-3093(93)91196-A - Schäfer J, Ristein Jürgen, Ley Lothar, Ibach Harald:
High Sensitivity photoelectron yield spectroscopy with computer-calculated electron optics
In: Review of Scientific Instruments 64 (1993), S. 653
ISSN: 0034-6748
DOI: 10.1063/1.1144192 - Gertkemper Th., Ristein Jürgen, Ley Lothar:
In-situ characterization of chemical annealing of a-Si:H by photoelectron spectroscopy
In: Journal of Non-Crystalline Solids 164-166 (1993), S. 123
ISSN: 0022-3093
DOI: 10.1016/0022-3093(93)90507-T - Graf Walther, Wolf Markus, Leihkamm K., Ristein Jürgen, Ley Lothar:
Light-induced transient changes of the occupied density of defect states of a-Si:H
In: Journal of Non-Crystalline Solids 164-166 (1993), S. 195
ISSN: 0022-3093
DOI: 10.1016/0022-3093(93)90524-2 - Graf Walther, Leihkamm K., Ristein Jürgen, Ley Lothar:
Signature of the weak bond-dangling bond conversion process in a-Si:H as seen by total photoelectron yield spectroscopy
Amorphous Silicon Technology (Pitsburg, 13. April 1993 - 16. April 1993)
In: MRS Proceedings 1993
1991
- Teuschler Thomas, Hundhausen Martin, Ley Lothar, Viczian C.:
Individual electronic defect states in a-Si:H/a-SiNx double barrier structures
In: Journal of Non-Crystalline Solids 137&138 (1991), S. 1107
ISSN: 0022-3093
DOI: 10.1016/S0022-3093(05)80316-3 - Santos P., Hundhausen Martin, Ley Lothar, Viczian C.:
Structure of interfaces in a-Si:H/a-SiNx:H superlattices
In: Journal of Applied Physics 69 (1991), S. 778
ISSN: 1089-7550
The formation and stability of sub-micron clusters in silane and argon plasmas
In: Journal of Non-Crystalline Solids 137&138 (1991), S. 795
ISSN: 0022-3093
DOI: 10.1016/S0022-3093(05)80240-6 , :
1989
- Arce R., Ley Lothar, Hundhausen Martin:
Random telegraphic noise in large area a-Si:H/a:Si1xNx double barrier structures
In: Journal of Non-Crystalline Solids 114 (1989), S. 471
ISSN: 0022-3093
DOI: 10.1016/0022-3093(89)90693-5
1987
Carrier recombination kinetics in amorphous doping superlattices
In: Disordered semiconductors, New York & London: Plenum Press, 1987, S. n/a
ISBN: 0306424940 , :
1986
- Hundhausen Martin, Santos P., Ley Lothar, Habraken F., Beyer Wolfgang Fritz, Primig R., Gorges G.:
Characterization of superlattices based on amorphous silicon
In: Journal of Applied Physics 61 (1986), S. 556
ISSN: 1089-7550
1985
- Santos P., Hundhausen Martin, Ley Lothar:
Experimental evidence for Phonon folding in compositional amorphous Superlattices
In: Journal of Non-Crystalline Solids 77&78 (1985), S. 1069
ISSN: 0022-3093
DOI: 10.1016/0022-3093(85)90842-7
Model for persistent photoconductivity in doping-modulated amorphous silicon superlattices
In: Physical Review B 32 (1985), S. 6655
ISSN: 0163-1829
DOI: 10.1103/PhysRevB.32.6655 , :- Santos P., Hundhausen Martin, Ley Lothar:
Observation of folded-zone acoustical phonons by Raman scattering
In: Physical Review B - Condensed Matter and Materials Physics 33 (1985), S. 1516
ISSN: 1550-235X
Persistent Photoconductivity in Doping-modulated amorphous silicon superlattices
In: Journal of Non-Crystalline Solids 77&78 (1985), S. 1051
ISSN: 0022-3093
DOI: 10.1016/0022-3093(85)90839-7 , :
1984
- Hundhausen Martin, Ley Lothar, Carius R.:
Carrier Recombination in Doping-Superlattices of a-Si:H
17th Int. Conf. on the Physics of Semiconductors (San Francisco)
In: Proc. 17th Int. Conf. on the Physics of Semiconductors, San Francisco: 1984 - Hundhausen Martin, Ley Lothar, Carius R.:
Carrier Recombination Times in Amorphous-Silicon Doping Superlattices
In: Physical Review Letters 53 (1984), S. 1598
ISSN: 0031-9007
DOI: 10.1103/PhysRevLett.53.1598