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TU Berlin

Inhalt des Dokuments

Publikationen 1995 - 1993

1995

Photophysical and Photochemical Processes in Fullerenes Under High- Intensity
Illumination

H. J. Byrne, W.K. Maser, M. Kaiser, L. Akselrod, J. Anders, W.W. Ruhle, X.-Q. Zhou,
C. Thomsen, A.T. Werner, A. Mittelbach, and S. Roth
Journal of Materials Processing Technology 54 149-58 (1995)

Spatially Resolved Luminescence and Raman Study on the GaN/Substrate
Interface

H. Siegle, P. Thurian, L. Eckey, A. Hoffmann, C. Thomsen,  B.K. Meyer, T. Detchprohm, K. Hiramatsu, H. Amano, and  I. Akasaki
Proceedings Vol. 395, pp. 577 (1995)

Raman and Photoluminescence Imaging of the GaN/Substrate Interface
H. Siegle, P. Thurian, L. Eckey, A. Hoffmann, C. Thomsen, B.K. Meyer, H. Amano, and I. Akasaki
Inst. Phys. Conf. Ser. 149, 97.

Ein Jahr für die Physik: Newton, Feynman und andere
C. Thomsen and H.-E. Gumlich
(Wissenschaft und Technik Verlag, Berlin, 1995), 369 pages.

Quantitative Determination of Hexagonal Minority Phase in Cubic GaN Using Raman
Spectroscopy

H. Siegle, L. Eckey, A. Hoffmann, C. Thomsen, B.K. Meyer, D. Schikora, M. Hankeln, and K. Lischka
Solid State Commun. 96, 943-9 (1995).
paper (PDF, 370,7 KB)

Crystal-Field Effects in the Raman Spectra of C60 Fullerites
V.G. Hadjiev, P.M. Rafailov, C. Thomsen, and M.K. Kelly
Physics and Chemistry of Fullerenes and Derivatives,
ed. H. Fink, M. Mehring, S. Roth (World Scientific, Singapore, 1995), 226-9.

Micro-Raman Study of Isotope Substitution in YBa2Cu318O6.2 During Local Laser  Annealing
V.G. Ivanov, M.N. Iliev, and C. Thomsen
Phys. Rev. B 52, p. 13652. (1995)
paper (PDF, 560,7 KB)

The Low-Temperature Infrared Optical Functions of SrTiO3 Determined by Reflectance Spectroscopy and Spectroscopic Ellipsometry
K. Kamaras, K.-L. Barth, F. Keilmann, R. Henn, M. Reedyk, C. Thomsen, M. Cardona, J. Kirchner, P.L. Richards, and J.-L. Stehle
Appl. Phys.78, 123d4-40 (1995).

Raman Study of Kramers Doublets in Nd2CuO4
P. Dufour, S. Jandl, C. Thomsen, M. Cardona, B.M. Wanklyn, and C. Changkang
Phys. Rev. B 51, 1053-7 (1995).
paper (PDF, 388,8 KB)

 

1994

Excited State Phenomena in Solid State Fullerenes
L. Akselrod, H.J. Byrne, C. Thomsen, and S. Roth
Molecular Crystals and Liquid Crystals 256, 833-8 (1994).

A Study of Reversible Photochemical Phenomena in C60
H.J. Byrne, W.K. Maser, M. Kaiser, L. Akselrod, W.W. Rühle, C. Thomsen, A. Mittelbach, and S. Roth
Molecular Crystals and Liquid Crystals 252-253, 49-58 (1994).

Observation of the Effects of Phonon Dispersion on the Fröhlich-Interaction-Induced
Second-Order Raman Scattering in Pb2Sr2PrCu3O8

M. Reedyk, C. Thomsen, M. Cardona, J.S. Xue, and J.E. Greedan
Phys. Rev. B 50, 13762-7 (1994).
paper (PDF, 589,4 KB)

A Raman Study of Superconducting Crystals of Ba1-xKxBiO3
B. Lederle, C. Thomsen, C. Escribe-Filippini, J. Marcus, and M. Affronte
ibid., pt. 4, 2523-4.

Forbidden Fröhlich-Interaction-Induced 2-LO Raman Scattering in PB2Sr2RCu3O8
(R= rare earth element)

M. Reedyk, C. Thomsen, M. Cardona, J.S. Xue, and J.E. Greedan
ibid., pt. 2, 1165-6.

Electronic Raman Scattering and Phonon Selfenergy in a Low-Tc
Superconductor

Yu.S. Ponosov, C. Thomsen, and M. Cardona
ibid., pt. 2, 1153-4.

Symmetry-Dependent Phonon Interactions in YBa2Cu4O8 Superconductors: a Raman and Infrared Spectroscopic Study
A. Litvinchuk, M. Käll, L. Borjesson, C. Thomsen, M. Cardona, P. Berastegui and L.-G. Johansson
Physica C 235-240, pt.2, 1091-2,(1994).

Excitation Energy and Temperature Dependent Raman Study of Rb3C60 Films
M. Kelly and C. Thomsen
Phys. Rev. B 50, 18572-9 (1994).
paper (PDF, 757,3 KB)

Raman-active phonons and mode softening in superconducting HgBa2CuO4+δ
M. Krantz, C. Thomsen, Hj. Mattausch, and M. Cardona
Phys. Rev. B 50, p. 1165-70 (1994).
paper (PDF, 520,0 KB)

Spectroscopy of Infrared-Active Phonons in high temperature superconductors
A. Litvinchuk, C. Thomsen, M. Cardona, and L. Börjesson
Proceeding of the Fourth World Congress on Superconductivity (Orlando, FL, USA, 1994),328.

Infrared-Active Phonons and the Superconducting Gap of Tc-Reduced Double-Chain YBa2Cu3O7-δ
Superconductors

A. Litvinchuk, C. Thomsen, M. Cardona, L. Borjesson, M. Käll, P. Berastegui and L.-G. Johansson
Phys. Rev. B 50, 1171, (1994).
paper (PDF, 602,2 KB)

Far-Infrared Response of Free Carriers in YBa2Cu3O7 from Ellipsometric Measurements
J. Humlicek, C. Thomsen, M. Cardona, K. Kamaras, M. Reedyk, M.K. Kelly, and P. Berberich
Physica C 222, 166-72, (1994).

Infrared Vibrations of High-Tc Superconductors: Experiment and Theory
A. Litvinchuk, C. Thomsen, and M. Cardona
Physical Properties of High Temperature Superconductors IV, ed. D.M. Ginsberg
(World Scientific, Singapore, 1994), 375-469.

Anisotropic Properties of (110)-YBCO/PrBCO Superlattices
I. Trofimov, A. Litvinchuk, K. Kamaras, C. Thomsen, H.-U. Habermeier
J. Superconductivity 7, 209-11 (1994).

What can we learn from the Optical Properties of Superlattics about Superconductivity?
I.E. Trofimov, S.D. Brorson, R. Buhleier, K. Kamaras, J.O. White, H.-U. Habermeier, J. KUhl, C. Thomsen, and M. Cardona
Physica B 194-196, 2409-10, 1994.

Superconducting Gap in PrxY1-xBa2Cu4
O8 and YBa2-ySryCu4O8 Probed by
Infrared Phonon Energies

A. Litvinchuk, C. Thomsen, M. Cardona, L. Borjesson, M. Käll, P. Berastegui and L.-G. Johannsson
J. Superconductivity 7, 113-16, 1994

 

1993

Light Scattering by Acoustic Phonons in Unhydrogenated and
Hydrogenated Amorphous Silicon

E. Bustarret, C. Thomsen, M. Stutzmann, A. Asano, and C. Summonte
J. Non Cryst. Solids 164-66, 927-30 (1993).

Comment on "Renormalization of Phonons in a (Y/Pr)Ba2Cu3O7 Superlattice
Investigated by Raman Spectroscopy"

C. Thomsen and M. Cardona
Phys. Rev. Lett. 71, 2163 (1993).
paper (PDF, 105,2 KB)

Raman Scattering in High-Tc Superconductors
C. Thomsen and D.H. Leach
Proceedings of the International Workshop on High-Tc Superconductivity, Hokadate,
June 28 - July 1, 1993

a) Reversible Photochemical Processes in Fullerenes: A Raman Study
L. Akselrod, H.J. Byrne, C. Thomsen, and S. Roth
Chem. Phys. Lett., 215, 131-6 (1993).
b) Raman Studies of Photochemical-Reactions in Fullerene Films
L. Akselrod, H.J. Byrne, C. Thomsen, A. Mittelbach, and S. Roth
Chem. Phys. Lett., 212, 384-390(1993).

Raman Studies of Nonlinear Phenomena in Fullerene Crystallites
H.J. Byrne, L. Akselrod, C. Thomsen, A. Mittelbach, and S. Roth
Appl. Phys. A 57, 299 (1993).

Self-Energy Effects of the B1g Phonon in Bi2sr2CaCu2O8
D. Leach, C. Thomsen, M. Cardona, L. Mihaly, and C. Kendziora
Solid State Commun.88, 457 (1993).

Optical Spectroscopy of C60 Clathrate Crystals and Pristine C60 Films
K. Kamaras, V.G. Hadjiev, C. Thomsen, M.K. Kelly, M. Stutzmann, S. Pekker, K. Fodor-Csorba, G. Faigel, M. Tegze
in  Electronic Properties of Fullerenes, Springer Series in Solid-State
Sciences 117, eds. H. Kuzmany, J. Fink, M. Mehring, and S. Roth
(Springer Verlag, Berlin, 1993) p. 312.

Crystal-Field Excitation Phonon Coupling in Pb2Sr2NdCu3O8+δ
R. Wegerer, C. Thomsen, T. Ruf, E. Schönherr, M. Cardona, M. Reedyk, J.S. Xue, U.E. Greedan, and A. Furrer
Phys. Rev. B 48, 6413 (1993).
paper (PDF, 579,9 KB)

Evidence for a Scaling of the Superconducting Gap with Tc
in PrxY1-xBa2Cu4O8

A. Litvinchuk, C. Thomsen, M. Cardona, L. Borjesson, M. Käll, P. Berastegui and L.-G. Johansson
Solid State Commun.87, 907 (1993).

Resonant Raman scattering of oxygen-deficient YBa2Cu3
O7-δ:
Evidence for the coexistence of ortho-I, ortho-II, and tetragonal microstructures

M. Iliev, C. Thomsen, V.G. Hadjiev, and M. Cardona
Phys. Rev. B  47, 12341 (1993).
paper (PDF, 435,4 KB)

a)On the Possible Charge Transfer in Superconducting Superlattices
I. Trofimov, D. Leach,  A. Litvinchuk, K. Kamaras, C. Thomsen, H.-U. Habermeier, and M. Cardona
Physica C 209, 51 (1993).

b)Growth and Optical Study of Superconducting Superlattices
I.E. Trofimov, H.-U. Habermeier, A. Litvinchuk, D.H. Leach, K. Kamaras, C. Thomsen, and M. Cardona
Journal of Alloys and Compounds 195, 187-90 (1993).

Raman Scattering Probe of Oxygen Ordering during Room Temperature
Annealing of YBa2Cu3O7-δ

V.G. Hadjiev, C. Thomsen, J. Kircher, and M. Cardona
Phys. Rev. B 47, 9148 (1993).
paper (PDF, 327,0 KB)

Crystal-Field Raman Scattering in Nd2CuO4
S. Jandl, M. Iliev, C. Thomsen, T. Ruf, M. Cardona, B.M. Wanklyn, and C. Chengkang
Solid State Commun.87, 609-612 (1993).

A Comment on the Superconductivity-Induced Broadening of the 340cm-1
Raman-active Phonon in YBa2Cu3O7

C. Thomsen and M. Cardona
Physica C 206, 137 (1993).

Lattice-vibrations of  Y1-xPrxBa2Cu3O7: Theory and Experiment
J. Humlicek, A. Litvinchuk, W. Kress, B. Lederle, C. Thomsen, M. Cardona, H.-U. Habermeier, I. Trofimov, and W. König
Physica C 206, 345 (1993).

Above-Tc Anomalies of the Infrared-Active Phonons in
RBa2Cu4O8  (R=Dy, Ho) and Y2Ba4Cu7O15-δ Superconductors

A. Litvinchuk, C. Thomsen, M. Cardona, J. Karpinski, E. Kaldis, and S. Rusiecki
Z. Phys. B 92, 9 (1993).

Methode zur quantitativen Bestimmung des Epitaxieanteils in Y123
Dünnschichten

C. Thomsen
Supraleitung und Tieftemperaturtechnik, Statusseminar 21.-23.
September 1992 (VDI-Verlag 1993) p. 371

Infrared and Raman Spectra of C60 Clathrates
K. Kamaras, V.G. Hadjiev, C. Thomsen, S. Pekker, K. Fodor-Csorba, G. Faigel, and M. Tegze
Synthetic Metals 55-57, 3021 (1993).

Infrared and Raman Spectra of C60 n Pentane Clathrate Crystals
K. Kamaras, V.G. Hadjiev, C. Thomsen, S. Pekker, K. Fodor-Csorba, G. Faigel, and M. Tegze
Chem. Phys. Letters 202, 325 (1993).

Phonon Self-Energy Effects in YBa2Cu3O7 Below Tc: the Role of Oxygen Disorder
V.G. Hadjiev, C. Thomsen, and M. Cardona
Electronic Properties of High-Tc Superconductors, Eds. H. Kuzmany, M. Mehring,
J. Fink, Springer Series in Solid-State Sciences 113 (Springer-Verlag Berlin, 1993), p. 220.

Chain-Oxygen Vibrations and Phonon Anomalies above Tc in YBa2Cu3O7 and YBa2Cu4O8
A. Litvinchuk, C. Thomsen, and M. Cardona
Electronic Properties of High-Tc Superconductors, Eds. H. Kuzmany, M. Mehring,
J. Fink, Springer Series in Solid-State Sciences 113 (Springer-Verlag Berlin, 1993), p. 220.

Comment on "Axial oxygen-centered lattice instabilities in YBa2Cu3O7:
An Application of the Analysis of Extended X-Ray-Absorption Fine Structure in Anharmonic Systems"

C. Thomsen and M. Cardona
Phys. Rev. B 47, 12320 (1993).
paper (PDF, 181,1 KB)

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