Issue |
Europhys. Lett.
Volume 60, Number 3, November I 2002
|
|
---|---|---|
Page(s) | 460 - 466 | |
Section | Condensed matter: electronic structure, electrical, magnetic, and optical properties | |
DOI | https://doi.org/10.1209/epl/i2002-00286-8 | |
Published online | 01 October 2002 |
Ultrafast carrier relaxation dynamics in single-layer cuprates
1
Physics Department, University of Wisconsin-Madison
- Madison, WI 53706, USA
2
Los Alamos National Laboratory - Los Alamos, NM, USA
3
Physics Department, Vanderbilt University - Nashville, TN, USA
4
Institute of Physics, Polish Academy of Sciences -
PL-02904 Warszawa, Poland
5
Department of Electrical and Computer Engineering
and Laboratory for Laser Energetics, University of Rochester
- Rochester, NY 14627, USA
6
Humboldt-Universität, Institut für Physik -
Invalidenstrasse 110 D-10115 Berlin, Germany
7
Applied Sciences Department, College of William
and Mary - Williamsburg, VA, USA
8
Physics Department, Pennsylvania State University -
University Park, PA, USA
9
OXXEL GmbH, Technologiepark Universitaet - Fahrenheitstrasse
9 Bremen, D-28359, Germany
Received:
22
April
2002
Accepted:
22
August
2002
Using a femtosecond pump-probe optical technique, we measured the
time-resolv ed change in reflectivity of three single-layer
cuprate samples, including
x
,
and
x
grown on
. We analyze the data in terms of a nonthermal
electron relaxation model, and obtain quantitative agreement
between the model and the data. The initial electron-electron
thermalization process is much longer in the superconducting
samples as opposed to the overdoped nonsuperconducting sample,
suggesting a bottleneck in electron thermalization process due to
the presence of the superconducting gap.
PACS: 78.47.+p – Time-resolved optical spectroscopies and other ultrafast optical measurements in condensed matter / 74.72.-h – High- compounds / 74.76.Bz – High-
films
© EDP Sciences, 2002
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