Issue |
Europhys. Lett.
Volume 61, Number 1, January 2003
|
|
---|---|---|
Page(s) | 122 - 128 | |
Section | Condensed matter: electronic structure, electrical, magnetic, and optical properties | |
DOI | https://doi.org/10.1209/epl/i2003-00258-6 | |
Published online | 01 January 2003 |
An infrared study of the Josephson
vortex state in high-
cuprates
1
Department of Physics,
University of California at San Diego La Jolla, CA 92093, USA
2
Central Research Institute of Electric Power Industry -
Tokyo, Japan
3
National High Magnetic Field Laboratory - Tallahassee, FL
3231, USA
Received:
19
June
2002
Accepted:
4
October
2002
We report the results of the c-axis infrared spectroscopy of
x
in high magnetic field oriented parallel
to the
planes. A significant suppression of the superfluid
density with magnetic field
is observed for both
underdoped (x=0.125) and overdoped (x=0.17) samples. We show that
the existing theoretical models of the Josephson vortex state fail
to consistently describe the observed effects and discuss possible
reasons for the discrepancies.
PACS: 74.72.Dn –
-based cuprates / 74.25.Gz – Optical properties / 74.50.+r – Proximity effects, weak links, tunneling phenomena, and Josephson effects
© EDP Sciences, 2003
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