1989

A Light-Scattering Study of Electron-Phonon Interaction in the Oxide Superconductors
C. Thomsen, M Cardona, R. Liu, T. Ruf, B. Gegenheimer, and E.T. Heyen
Proceedings of the Intl. Conf. on High-Temperature Superconductors and Materials and Mechanisms of Superconductivity, Stanford, 1989, edited by R.N. Shelton,
W.A. Harrison, and N.E. Phillips,
Physica C 162 - 164, 1079 (1989).

Anisotropy of the dielectric function of YBa₂Cu₃O₆
J. Kircher, M. Alouani, M. Garriga, P. Murugaraj, J. Maier, C. Thomsen,  M. Cardona, O.K. Andersen, and O. Jepsen
Phys. Rev. B 40, 7368 (1989).
paper [1]

Raman-Scattering Spectra of a Superconducting
Pb₂Sr₂Y_0.75Ca_0.25Cu₃O_8+δ  Single Crystal
R. Liu,  M. Cardona, B. Gegenheimer, E.T. Heyen, and C. Thomsen
Phys. Rev. B 40, 2654 (1989).
paper [2]

Pb₂Sr₂R_1-xCa_xCu₃O_8+δ: Raman and Far Infrared Investigation
C. Thomsen, M. Cardona, R. Liu, Hj. Mattausch, W. König, F. Garcia-Alvarado, B. Suarez, E. Moran, and M.Alario-Franco
Solid State Commun.69, 857 (1989).

Vibrational Modes in the CuO₂ Planes of YBa₂Cu₃O_7-δ
M. Cardona and C. Thomsen
Electronic Structure of High-Tc Superconductors, Proceedings of the International Symposium, Rome, October 5-7, 1988 (A. Bianconi and A. Marcelli, eds,
Pergamon Press, New York, 1989), p. 79.

Raman Scattering in High-T_c Superconductors
C. Thomsen and M. Cardona
Physical Properties of High-Temperature Superconductors I, ed. D.M. Ginsberg (World Scientific, Singapore, 1989), p. 409.

Raman Scattering as an Analytic Tool for High-T_c Superconductors
C. Thomsen, M. Cardona, and R. Liu
Journal of the Less Common Metals 150, 33 (1989).

1988

Raman and Far Infrared Studies of YBa₂Cu₃O_7-δ Prepared Exclusively
with O¹⁸
C. Thomsen, H. Mattausch, M. Bauer, W. Bauhofer, R. Liu, L. Genzel, and M. Cardona
Solid State Commun.67, 1069 (1988).

Raman Study of the Phonon Anomaly in Single-Crystal YBa₂Cu₃O_7-δ in the
Presence of a Magnetic Field
T. Ruf, C. Thomsen, R. Liu, and M. Cardona
Phys. Rev. B 38, 11985 (1988).
paper [3]

Effect of Isotopic Substitution of Oxygen on T_c and the Phonon Frequencies of High Tc Superconductors
M. Cardona, R. Liu, C. Thomsen, W. Kress, E. Schönherr, M. Bauer, L. Genzel, and W. König
Solid State Commun.67, 789 (1988).

Electronic Structure and Superconductivity of
Co-substituted YBa₂Cu₃O_7-δ
F.U. Hillebrecht, L. Ley, R.L. Johnson, R. Liu, C. Thomsen, M. Cardona, Hj. Mattausch, W. Bauhofer, and A. Simon
Solid State Commun.67, 379 (1988).

CuO₂-Plane Vibrational Modes in Single Crystals of PrBa₂Cu₂O_7-δ
C. Thomsen, R. Liu, M. Cardona, U. Amador, and E. Moran
Solid State Commun.67, 271 (1988).

Raman Scattering on Superconducting Crystals of
Bi₂(Sr_1-xCa_x)_n+2Cu_n"+1"O_(6-2n)+δ (n = 0, 1)
M. Cardona, C. Thomsen, R. Liu, H.G. von Schnering, M. Hartweg, Y.F. Yan, and  Z.X. Zhao
Solid State Commun.66, 1225 (1988).

Phonon Characterization of  Bi₂(Sr_{1- x}Ca_x)CuO_6+δ
by Infrared and Raman Spectroscopy
Z.V. Popovic, C. Thomsen, M. Cardona, R. Liu, G. Stanisic, R. Kremer, and W. König
Solid State Commun.66, 965 (1988).

Raman Scattering in High T_c Superconductors:
YBa₂Cu₃O₇ and Bi₂SrCaCuO₈
M. Cardona, R. Liu, C. Thomsen, M. Hartweg, L. Popp, and H.G. von Schnering
Proceedings of the XIth International Conference on Raman Spectroscopy, London (Wiley, New York, September 1988), p. 403.

Infrared and Raman Spectra of M₂Cu₂O₅ (M = Y, Ho)
Z.V. Popovic, C. Thomsen, M. Cardona, R. Liu, G. Stanisic, and W. König
Z. Phys. B-Condensed Matter 72, 13 (1988).

Untwinned Single Crystals of YBa₂CuO_7-δ: an Optical Investigation of
the a-b Anisotropy
C. Thomsen, M. Cardona, B. Gegenheimer, R. Liu, and A. Simon
Phys. Rev. B 37, 9860 (1988).
paper [4]

High-T_c Films by Thermal Co-Evaporation: First Phonon Experiments
P. Berberich, W. Dietsche, H. Kinder, J. Tate, C. Thomsen, and B. Scherzer
Proceedings of the Intl. Conf. on High-Temperature Superconductors and Materials
and Mechanisms of Superconductivity, Interlaken, Switzerland, ed. by J. Müller and  J.L. Olsen,
Physica C 153 - 155, 1451 (1988).

Raman Scattering in YBa₂Cu₃O_7-δ Untwinned Single Crystals
C. Thomsen, M. Cardona, R. Liu, B. Gegenheimer, and A. Simon
Proceedings of the Intl. Conf. on High-Temperature Superconductors and Materials
and Mechanisms of Superconductivity, Interlaken, Switzerland, ed. by J. Müller and
J.L. Olsen,
Physica C 153 - 155, 1756 (1988).

Raman Scattering in Single Crystals of YBa₂Cu₃O_7-δ
C. Thomsen, M. Cardona, B. Gegenheimer, and R. Liu
Proceedings of the Intl. Conf. on High-Temperature Superconductors and Materials
and Mechanisms of Superconductivity, Interlaken, Switzerland, ed. by J. Müller and
J.L. Olsen
Physica C 153 - 155, 262 (1988).

Optical Phonons in Y₂BaCuO₅
Z.V. Popovic, C. Thomsen, M. Cardona, R. Liu, G. Stanisic, and W. König
Solid State Commun.66, 43 (1988).

Frequencies, Eigenvectors, and Single Crystal Selection Rules of 
k = 0 phonons in YBa₂Cu₃O_7-δ:Theory and Experiment
R. Liu, C. Thomsen, W. Kress, M. Cardona, B. Gegenheimer, F.W. de Wette, J. Prade, A.D. Kulkarni, and U. Schröder
Phys. Rev. B 37, 7971 (1988).
paper [5]

Raman and Infrared Studies of the Oxygen Deficient Semiconducting Phase of the Superconducting Cuprate Perovskites
C. Thomsen, M. Cardona, W. Kress, R. Liu, L. Genzel, M. Bauer, E. Schönherr, and
U. Schröder
Solid State Commun.65, 1139 (1988).

High T_c Superconductors MBa₂Cu₃O_7-x with M = Mixed Rare Earths and
Y: Low Frequency Peak Engineering
C. Thomsen, R. Liu, A. Wittlin, L. Genzel, M. Cardona, W. König, M.V. Cabanas, and E. Garcia
Solid State Commun.65, 219 (1988).

Presence of Cu₂O in MBa₂Cu₃O₆ (M = Sm, Ho),
Semiconducting Modification of High Temperature Superconductors
R. Liu, C. Thomsen, M. Cardona, and Hj. Mattausch
Solid State Commun.65, 67 (1988).

Infrared and Raman Spectra of the New Superconducting Cuprate
Perovskites MBa₂Cu₃O₇, M = Nd, Dy, Er, Tm
M. Cardona, R. Liu, C. Thomsen, M. Bauer, L. Genzel, W. König, A. Wittlin, U. Amador, M. Barahona, F. Fernandez, C. Otero, and
R. Saez
Solid State Commun.65, 71 (1988).

Systematic Raman and Infrared Studies of the Superconductor YBa₂Cu₃O_7-x
as a Function of Oxygen Concentration ( 0 ≤  x  ≤ 1 )
C. Thomsen, R. Liu, M. Bauer, A. Wittlin, L. Genzel, M. Cardona, E. Schönherr, W. Bauhofer, and W. König
Solid State Commun.65, 55 (1988).

Identification of Electron and Hole Picosecond Trapping Processes in Doped a-Si:H
Z. Vardeny, C. Thomsen, and J. Tauc
Solid State Commun.65, 601 (1988).

1987

Picosecond Optical Studies of Electron and Hole Thermalization in the Band Tails of a-Si:H
C. Thomsen, Z. Vardeny, and J. Tauc
J. of Non-Cryst. Solids  97 & 98, 117 (1987).

Picosecond Acoustics as a Non-Destructive Tool for the Characterization of Very Thin Films
C. Thomsen, H.J. Maris, and J. Tauc
Thin Solid Films 154, 217 (1987).

Picosecond Photomodulation Spectroscopy in Amorphous Semiconductors
Z. Vardeny, C. Thomsen, H.T. Grahn, and J. Tauc
Phenomena in Bulk and Microstructure Semiconductors, edited by R.R. Alfano, Proc. SPIE, Vol. 793, 160 (1987).

1986

Observation of Molecular Vibrations in Real Time
J.M.Y. Ha, H.J. Maris, W.M. Risen, Jr., J. Tauc, C. Thomsen, and Z. Vardeny
Phys. Rev. Lett. 57, 3302 (1986).
paper [6]

Heat Flow in Glasses on a Picosecond Timescale
D.A. Young, C. Thomsen, H.T. Grahn, H.J. Maris, and J. Tauc
Phonon Scattering in Condensed Matter V, edited by A.C. Anderson and J.P. Wolfe
(Springer Verlag, New York, 1986), p. 49.

Picosecond Acoustic Interferometry
C. Thomsen, H.T. Grahn, D.A. Young, H.J. Maris, and J. Tauc
Phonon Scattering in Condensed Matter V, edited by A.D. Anderson and J.P. Wolfe (Springer Verlag, New York, 1986), p. 392.

Studies of High Frequency Acoustic Phonons Using Picosecond Optical Techniques
H.J. Maris, C. Thomsen, and J. Tauc
Phonon Scattering in Condensed Matter V, edited by A.C. Anderson and J.P. Wolfe (Springer Verlag, New York, 1986), p. 374.

Surface Generation and Detection of Phonons by Picosecond Light Pulses
C. Thomsen, H.T. Grahn, H.J. Maris, and J. Tauc
Phys. Rev. B 34, 4129 (1986).
paper [7]

Picosecond Interferometric Techniques for Study of Phonons in the Brillouin Frequency Range
C. Thomsen, H.T. Grahn, H.J. Maris, and J. Tauc
Optics Commun. 60, 55 (1986).

Influence of Interference on Photoinduced Changes in Transmission and Reflection
H.T. Grahn, C. Thomsen, and J. Tauc
Optics Commun. 54, 226 (1986).

Photocarrier Dynamics in Compensated Amorphous Silicon
C. Thomsen, H. Stoddart, T. Zhou, Z. Vardeny, and J. Tauc
Phys. Rev. B 33, 4396 (1986).
paper [8]

1985

Picosecond Electron and Phonon Phenomena in Amorphous Ge and As₂Te₃
C. Thomsen, H.T. Grahn, H.J. Maris, and J. Tauc
J. Non-Cryst. Solids 77 & 78, 1113 (1985).

Ultrasonic Experiments with Picosecond Time Resolution
C. Thomsen, H.T. Grahn, H.J. Maris, and J. Tauc
Journal de Physique, Colloq. C10, 765 (1985).

1984

Picosecond Optical Generation and Detection of Phonon Waves in a-As₂Te₃
C. Thomsen, J. Strait, Z. Vardeny, H.J. Maris, J. Tauc, and J.J. Hauser
Optical Effects in Amorphous Semiconductors, edited by P.C. Taylor and
S.G. Bishop (AIP Conference Proceedings No. 120, 1984), p. 102.

Picosecond Optical Excitation of Phonons in Amorphous As₂Te₃
C. Thomsen, J. Strait, Z. Vardeny, H.J. Maris, J. Tauc, and J.J. Hauser
Ultrafast Phenomena IV, edited by D.H. Auston and K.B. Eisenthal (Springer Verlag,
New York, 1984), p. 133.

Interaction of Ultrashort Pulses with Etalons
C. Thomsen and N.M. Lawandy
Appl. Optics 23, 3262 (1984).

Coherent Phonon Generation and Detection by Picosecond Light Pulses
C. Thomsen, J. Strait, Z. Vardeny, H.J. Maris, J. Tauc, and J.J. Hauser
Phys. Rev. Lett. 53, 989 (1984).
paper [9]