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TU Berlin

Inhalt des Dokuments

Publikationen 1998 - 1996

1998

Strain relaxation and strong impurity incorporation in Epitaxial Laterally Overgrown GaN: Direct imaging of different growth domains
by cathodo-luminescence microscopy and micro-Raman spectroscopy

F. Bertram, T. Riemann, J. Christen, A. Kaschner, A. Hoffmann, C. Thomsen, K. Hiramatsu, T. Shibata, and N. Sawaki
Appl. Phys. Lett. 74, 359 (1998).
paper (PDF, 178,9 KB)

Infrared active phonons in single-walled carbon Nanotubes
U. Kuhlmann, H. Jantoljak, N. Pfänder, P. Bernier, C. Journet, and C. Thomsen
Chem. Phys. Lett.294, 237 (1998).
paper (PDF, 202,9 KB)

Low-Energy Raman-active phonons of Multiwalled carbon Nanotubes
H. Jantoljak, J.-P. Salvetat, L. Forró, and C. Thomsen
Appl. Phys. A 67, 113-116 (1998).

Photoluminescence and Raman study of compensation effects in Mg-doped GaN epilayers
L. Eckey, U. von Gfug, J. Holst, A. Hoffmann, A. Kaschner, H. Siegle, C. Thomsen, B. Schineller, K. Heime,
M. Heuken, O. Schön, and R. Beccard
Journal of Applied Physics 84, 5828 (1998)
paper (PDF, 77,3 KB)

Raman Spectroscopy Experiments in High-Tc Superconductors
C. Thomsen and C. Kaczmarczyk
in: Models and phenomenology for conventional and high-temperature superconductivity, ed. G. Iadonisi, J.R. Schrieffer and M.L.Chiofalo
(IOS Press, Amsterdam, 1998) p. 241.

Ein Jahr für die Physik: Newton, Feynman und andere
C. Thomsen and E.-H. Gumlich
2. erweiterte Auflage
(Wissenschaft und Technik Verlag, Berlin, 1998) 401 pages.

Raman scattering from defects in GaN: The question of vibrational or electronic scattering mechanism
H. Siegle, A. Kaschner, A. Hoffmann, I. Broser,  C. Thomsen , S. Einfeldt, and D. Hommel
Phys. Rev. B 58, 13619 (1998).
paper (PDF, 160,4 KB)

Pressure-Dependent Dynamical and Dielectric Properties of GaN and AlN
K. Karch, J.-M. Wagner, H. Siegle, C. Thomsen, and F. Bechstedt
International Conference on Silicon Carbide, III-nitrides and Related Materials -1997, August 31-September 5, 1997, Stockholm City Conference
Centre, Sweden,
Material Science Forum Vols. 264-268, pp. 303-306, (1998).

Lasing and Electronic Properties of a Single InAs Monolayer embedded in Bulklihe GaAs
A.R. Goñi, M. Stroh, C. Thomsen, F. Heinrichsdorff, V. Türck, A. Krost, and D. Bimberg
Proc. l4th SLAFES, Oaxaca, Mexiko, Jan. 1998, ed. J.L. Morán-Lopéz, Rev. Mex. Fis. 44 S3, 154 (1998).

Micro-Raman Investigation of the Low-Energy Mode of Multiwalled Carbon Nanotubes
H. Jantoljak, J.P. Salvetat, L. Forró , and C. Thomsen
ibid. p. 136.

Mid-Infrared Investigations and Spatially Resolved Raman Spectra of Singlewalled Carbon Nanotubes
C. Thomsen, H. Jantoljak, U. Kuhlmann, C. Journet, and P. Bernier
Electronic Properties of Novel Materials-Progress in Molecular Nanostructures,
XII International Winterschool, Kirchberg, Austria, eds. H. Kuzmany, J. Fink,
M. Mehring, S. Roth
(AIP, New York, 1998), p. 123.

Local Strain Distribution of Hexagonal GaN Pyramids
A. Hoffmann, J. Christen, H. Siegle, A. Kaschner, C. Thomsen, K. Hiramatsu, S. Kitamura, and N. Sawaki
ICN'97, October 27-21, 1997, Tokushima, Japan.
Journal of Crystal Growth 189/190, 630-633 (1998).
paper (PDF, 153,8 KB)

Raman Scattering in Os: Nonadiabatic Renormalization of the Optical Phonon Energies
Yu.S. Ponosov, G.A. Bolotin, C. Thomsen, and M. Cardona
phys. stat. sol. (b) 208,257 (1998).
paper (PDF, 311,8 KB)

Raman-Active Phonons in the Quasi-One Dimensional Conductor La8-xSrxCu8020-δ (x=1.6, 2.0):
Polarized Raman Spectroscopy and Lattice Dynamical Calculations

M.V. Abrashev, V.N. Popov, and C. Thomsen
J. Phys.: Condens. Matter 10, 1643-1654 (1998).

High-Gain Excitonic Lasing from a Single InAs Monolayer in bulk GaAs
A.R. Goñi, M. Stroh, C. Thomsen, F. Heinrichsdorff, A. Krost, and D. Bimberg
Appl. Phys. Lett. 72, 1433 (1998).
paper (PDF, 73,0 KB)

Optical Spectroscopic Study of PrBa2Cu4O8
A.P. Litvinchuk, L. Börjesson, C. Thomsen, and P. Berastegui
J. Phys. Chem. Solids 59, 2000 (1998).

Raman Spectroscopy of Orthorhombic Perovskite-Like YMnO3 and LaMnO3
M.N. Iliev, M.V. Abrashev, G.G. Lee, V.N. Popov, Y.Y. Sun, C. Thomsen, R.L. Meng, and C.W. Chu
Phys. Rev. B 57, 2872-2877, (1998).
paper (PDF, 171,3 KB)

Micro-Raman Spectra of Single- and Multiwalled Carbon Nanotubes
H. Jantoljak, U. Kuhlmann, C. Thomsen,  S. Curran, S. Roth, W. Maser, C. Journet, and P. Bernier
Molecular Crystals and Liquid Cristals Science and Technology, Section C,
Molecular Materials 10, 145-150 (1998).

Carbon Nitride Films from Nitrogen Bombardment of C60
B. Pietzak, M Waiblinger, M. Gossla, A. Weidinger, H. Jantoljak, and C. Thomsen
ibid. pp 176-179.

Comperative Determination of Absolute Raman Scattering Efficiencies and Application to GaN
I.Loa, S. Gronemeyer, C. Thomsen, O. Ambacher, D. Schikora, and D.J. As
J. Raman Spectroscopy, 29, 291-295 (1998).
paper (PDF, 308,4 KB)

 

1997

Growth and characterization of a-axis oriented YBa2Cu307-x thin films on (100) LaSr Ga04 substrates
D. Fuchs, E. Brecht, P. Schweiss, I. Loa. C. Thomsen, and R. Schneider
Physica C 280, 167 (1997).
paper (PDF, 866,4 KB)

Theoretical and Experimental Study of the Lattice-Dynamical Properties of cubic GaN
H. Sterner, K. Karch, A. Schewiola, P. Pavone, D. Strauch, H. Siegle, G. Kaczmarczyk, L. Filippidis, and C. Thomsen
International Conference on Silicon Carbide, III-nitrides and Related Materials -1997, August 31-September 5, 1997, Stockholm City
Conference Centre, Sweden,
ibid. p. 307-310.

Crystal-Field Transitons of Nd3+ and Er3+ in Perovskite -Type Crystals
M. Dietrich, P. Thurian, I. Loa, S. Gronemeyer, A.P. Litvinchuk, and C. Thomsen
ICDS 97, Aveiro, Portugal,
Mat. Science Forum, 248-283, 1589, (1997).

Depth-Profile of the Excitonic Luminescence in Gallium Nitride Layers
H. Siegle, C. Thomsen, L. Eckey, A. Hoffmann, T. Detchprohm, and K. Hiramatsu
Materials Research Society, Symposium Proceedings Vol 449, ed. F.A. Ponce, T.D. Moustakas, I. Akasaki, B.A.
Monemar, pp. 677 (1997).

Raman active phonons in orthorhombic YMnO3 and LaMnO3
M.N. Iliev, M.V. Abrashev, H.G. Lee, V.N. Popov, Y.Y. Sun, C. Thomsen,
R.L. Meng, and C.W. Chu
Proceedings of the 1997 International Conference on Spectroscopies in Novel Super-
conductors (SNS 97), Falmouth, Massachussetts, Sept. 14-18, 1997

Spatially-Resolved Investigations of the Excitonic Luminescence in GaN
A. Hoffmann, J. Christen,  H. Siegle, F. Bertram,  D.Schmidt, L. Eckey, C. Thomsen, and K. Hiramatsu,
Mat. Science and Engineering B 50, 192-196 (1997).
paper (PDF, 377,1 KB)

Die Lehre an Universitäten
C. Thomsen
Physikalische Blätter, Meinungsseite, 53, 963 (1997)

The V3+-Center  in A1N
P. Thurian, I. Loa, P. Maxim, A. Hoffmann, C. Thomsen, and K. Pressel
Appl. Phys. Lett. 71, 2933 (1997).
paper (PDF, 79,4 KB)

Lasing Properties of a Single, Highly Strained InAs Monolayer in bulk GaAs
A.R. Goñi, M. Stroh, C. Thomsen, F. Heinrichsdorff, A. Krost, and D. Bimberg
Phys. Low-Dim. Struct. 11/12, 27 (1997).

Raman Scattering from Defects in GaN
H. Siegle, A. Kaschner, P. Thurian, A. Hoffmann, I. Broser, and C. Thomsen
ibid. p 1197.

Zeeman Study of the 0.9eV Emission in AlN and GaN
P. Thurian, I. Loa, P. Maxim, K. Pressel, A. Hoffmann, and C. Thomsen
Proceedings of the 19th International Conference on Defects of Semiconductors, Aveiro, Portugal,
Materials Science Forum 248-283, 1131, 1997.

High-Pressure Raman Scattering of Biaxially Strained GaN on GaAs
H. Siegle, A.R. Goñi, C. Thomsen, C. Ulrich, K. Syassen, B. Schöttker, D.J. As, and D. Schikora
in Gallium Nitride and Related Materials II, ed. C.R. Abernathy, H. Amano, and J.C. Zolper
per (Mat. Res. Soc., Pittburgh, 1997), p. 225.

Vertical Strain and Doping Gradients in thick GaN Layers
H. Siegle, A. Hoffmann, L. Eckey, C. Thomsen, J. Christen, F. Bertram, D. Schmicit, D. Rudloff, and K. Hiramatsu
Appl. Phys. Letters 71, (17), 2490 (1997).
paper (PDF, 95,4 KB)

Raman Spectroscopy on Carbon Nanotubes
H. Jantoljak, C. Thomsen, S. Curran, S. Roth, W. Maser, C. Journet, P. Bernier
(Molecular Nanostructures, World Scientific, 1997) pp. 459-462.

Doping Effects in the Sr14Cu24041-type Structure: a Raman Scattering Study
M.V. Abrashev, C. Thomsen, and M. Surtcher
Physica C 280, 297-303 (1997).
paper (PDF, 428,3 KB)

Fröhlich-Interaction-Induced Multiphonon Raman Scattering in SrCuO2and
Sr0,5Ca0,5Cu02

M.V. Abrashev, A.P. Litvinchuk, C. Thomsen, and V.N. Popov
Phys. Rev. B 55, R 8638 (1997).
paper (PDF, 138,9 KB)

Electronic Raman  Scattering on High-Temperature Superconductors in High Magnetic Fields
I. Loa, J. Hofmann, and C. Thomsen
phys. stat. sol. (b), 201, R 3 (1997).

Spatial Despersion of the Dielectric Response in Transition Metals: Manifestation in Raman Spectra
Yu.S. Ponosov, G.A. Bolotin, C. Thomsen, and M. Cardona
ICORS p. 868.

Comment on "Shallow donors in GaN studied by electronic Raman scattering in resonance with yellow luminescence transitions" by M. Ramsteiner et al.
H. Siegle, I. Loa, P. Thurian, L. Eckey, A. Hoffmann, I. Broser, and C. Thomsen
Appl. Phys. Lett.70, 909 (1997).
paper (PDF, 34,9 KB)

Influence of the Crystal Field on the Raman Intensity of C60 Fullerite
V.G. Hadjiev, P.M. Rafailov, H. Jantoljak, C. Thomsen, and M.K. Kelly
Phys. Rev. B 56, 2495-2500 (1997).
paper (PDF, 135,5 KB)

Defect Modes and Disorder Induced Raman Scattering in GaN
H. Siegle, I. Loa, P. Thurian, G. Kaczmarczyk, L. Filippidis . A. Hoffmann, and C. Thomsen
ibid. Z. Phys Chemic 200, p. 187-193 (1997).

A Vibrational Spectroscopic Study of Endohedral Li@C60 Fullerenes
H. Jantoljak, N. Krawez, I. Loa, R. Tellgmann, E.E.B. Campbell, A.P. Litvinchuk, and C. Thomsen
ibid. 200, 157-164 (1997).

Magneto-Raman study on CuGeO3
I. Loa, S. Gronemeyer, C. Thomsen, and R.K. Kremer
Z. Phys. Chemic 201, 333-342 (1997).

Optical Phonons in the orthorhombic double chain Sr1-xCaxCuO2(x=0,0.5)
M.V. Abrashev, A. Litvinchuk, C. Thomsen and V.N. Popov
Phys. Rev. B 55,9136 (1997).
paper (PDF, 185,7 KB)

Zone-Boundary Phonons in Hexagonal and Cubic GaN
H.Siegle, G. Kaczmarczyk, L. Filippidis, A.P. Litvinchuk, A. Hoffmann, C. Thomsen
Phys. Rev. B 55, 7000 (1997).
paper (PDF, 117,2 KB)

Nd3+ Crystal Field Transitions Studied by Raman and FIR Spectroscopies in Nd2BaZnO5
A. de Andres, S. Taboada, J.L. Martinez, M Dietrich, A. Litvinchuk, and C. Thomsen
Phys. Rev. B 55, 3568 (1997).
paper (PDF, 155,3 KB)

Raman Spectroscopy and Lattice-Dynamics Calculations of Mixed Layered Copper-Titanium Oxides
M.V. Abrashev, C. Thomsen, V.N. Popov and L.N. Bozukov
Physica C 274, 141-148 (1997).
paper (PDF, 512,1 KB)

Luminescence Properties of Nd2BaZnO5
B. Dareys, P. Thurian, S. Taboada, A. de Andres, M. Dietrich, R. Saez-Puche, A.P. Litvinchuk, J.L. Martinez, and C. Thomsen
Journal of Luminescence 72-74, 174-176 (1997).
paper (PDF, 113,7 KB)

Optical Properties of Nd3+ in Nd2BaZnO5
B. Dareys, P. Thurian, C. Thomsen, A. de Andres, S. Taboada
Phys. Rev. B 55, 6871-6879 (1997)
paper (PDF, 211,7 KB)

Intensity-Dependent Hot-Phonon Relaxation in ZnSe
V. Kutzer, H. Siegle, C. Thomsen, A. Hoffmann, I. Broser
Materials Science and Engineering B 43, 46-48 (1997).
paper (PDF, 230,4 KB)

 

1996

Raman Frequencies and Angular Dispersion of Polar Modes in Aluminium Nitride and Gallium Nitride
L. Filippidis, H. Siegle, A. Hoffmann, C. Thomsen, K. Karch and F. Bechstedt
phys. stat. sol. (b) 198, 621 (1996).

Acoustic and Optical Zone-Boundary Phonons in Gallium Nitride
H. Siegle, L. Filippidis, G. Kaczmarczyk, A. Litvinchuk, A. Hoffmann, and C. Thomsen
Proceedings of the 23rd International Conference on the Physics of Semiconductors, Berlin, Germany, World Scientific, 557 (1996)

Time-Resolved Raman Scattering in Gallium Nitride
H. Siegle, V. Kutzer, B. Lummer, A. Hoffmann, and C. Thomsen
Proceedings of the ICPS XXIII, Berlin, pp. 533, (1996)

Ein Jahr für die Physik: Aufgabensammlung
C. Thomsen
(Wissenschaft und Technik Verlag, Berlin, 1996), 128 pages.

Micro-Raman-Scattering Experiments of GaN Layers Deposited on Sapphire and SiC
H. Siegle, P. Thurian, L. Eckey,  G. Kaczmarczyk, L. Filippidis, A. Hoffmann, I. Broser, A. Litvinchuk, C. Thomsen, T. Detchprohm,
and K. Hiramatsu
Proceedings of the ISBLLED, Chiba, 1996, Japan, We-14, P. 180-183 (1996)

Defects in Cubic and Hexagonal GaN Epilayers
P. Thurian, L. Eckey, H. Siegle, J.-C. Holst, P. Maxim, R. Heitz; A. Hoffmann, C. Thomsen, I. Broser, K. Pressel, I. Akasaki, H. Amano,
K. Hiramatsu, T. Detchprohm, D. Schikora, M. Hankeln, K. Lischka.
Proceedings of the ISBLLED, Chiba, 1996, Japan, We-14, P. 180-183 (1996).

Topotactic Reactions of Superconducting YBa2Cu3O7
Thin Films with Water Vapour

W. Günther, R. Schöllhorn, H. Siegle, and C. Thomsen
Solid State Ionics 84, 23-32 (1996).

Spin Gap and Spin-Phonon Interaction in CuGeO3
I. Loa, S. Gronemeyer, C. Thomsen and R.K. Kremer
Solid State Commun. 99, 231 (1996).
paper (PDF, 382,1 KB)

Raman Scattering Analysis of High-Tc Superconductors
C. Thomsen
Journal of Raman Spectroscopy, 27,329-332 (1996).

Superstructure of Bi2Sr2CaCu2O8
Superconductors: a Raman Scattering Study

I. Loa, J. Hofmann, A. Litvinchuk, C. Thomsen, and N.I. Zavaritsky
"Spectroscopic Studies of Superconductors"; Proceedings of the SPIE, 2696,  Part A, p.248 (1996).

Spatially Resolved Photoluminescence and Raman-Scattering Experiments on the GaN/Subs Interface
H. Siegle, P. Thurian, L. Eckey, A. Hoffmann, C. Thomsen,B.K. Meyer,H. Amano, and I. Akasaki
Appl. Phys. Lett. 68, 1265-6 (1996).
paper (PDF, 1,6 MB)

Raman Investigations of YBa2-xLaxCu3O7 Ceramics
R. Wegerer, C. Thomsen, and M. Cardona
Phys. Rev. B Vol. 53, No. 6, 3561 (1996)
paper (PDF, 139,7 KB)

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