https://doi.org/10.1140/epjb/e2003-00351-8
Carrier relaxation time divergence in single and double layer cuprates
1
Physics Department, University of Wisconsin- Madison, Madison, WI
53706, USA
2
Los Alamos National Laboratory, Los Alamos, NM 87545, USA
3
Physics Department, Vanderbilt University, Nashville, TN 37235,
USA
4
Applied Sciences Department, College of William and Mary,
Williamsburg, VA 23187, USA
5
Institute of Physics, Polish Academy of Sciences, 02668 Warszawa,
Poland
6
Department of Electrical and Computer Engineering and Laboratory for
Laser Energetics, University of Rochester, Rochester, NY 14627, USA
7
Physics Department, Pennsylvania State University, University Park,
PA 16802 USA
8
Departement de Physique Appliquée, École Polytechnique
Fédérale Lausanne, 1015 Lausanne, Switzerland
9
Institut für Physik, Humboldt-Universität, Invalidenstrasse
110, 10115 Berlin, Germany
10
Department of Physics, University of Wisconsin Milwaukee, Milwaukee
WI 53211, USA
11
Physics Department, University of Wisconsin- Madison, Madison, WI
53706, USA
Los Alamos National Laboratory, Los Alamos, NM 87545, USA
Physics Department, Vanderbilt University, Nashville, TN 37235,
USA
Applied Sciences Department, College of William and Mary,
Williamsburg, VA 23187, USA
Institute of Physics, Polish Academy of Sciences, 02668 Warszawa,
Poland
Department of Electrical and Computer Engineering and Laboratory for
Laser Energetics, University of Rochester, Rochester, NY 14627, USA
Physics Department, Pennsylvania State University, University Park,
PA 16802 USA
Departement de Physique Appliquée, École Polytechnique
Fédérale Lausanne, 1015 Lausanne, Switzerland
Institut für Physik, Humboldt-Universität, Invalidenstrasse
110, 10115 Berlin, Germany
Department of Physics, University of Wisconsin Milwaukee, Milwaukee
WI 53211, USA
Geballe Laboratory for Advanced Materials, Stanford University,
Stanford, CA 94305, USA
Corresponding author: a onellion@wisc.edu
Received:
30
June
2003
Published online:
23
December
2003
We report the transient optical pump-probe reflectivity measurements on
single and double layer cuprate single crystals and thin films of ten
different stoichiometries. We find that with sufficiently low fluence the
relaxation time ( of all samples exhibits a power law
divergence with temperature
.
Further, the divergence has an onset temperature above the superconducting
transition temperature for all superconducting samples. Possible causes of
this divergence are discussed.
PACS: 74.78.Bz – High-Tc films / 74.72.-h – Cuprate superconductors (high-Tc and insulating parent compounds) / 74.25.Gz – Optical properties
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 2003