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research article
Evidence for two coupled subsystems in the superconducting state of La2-xSrxCuO4
2001
We used a pump-probe technique to measure the transient change of optical reflectivity of both La2-xSrxCuO4, of various dopings, and slightly underdoped YBa2Cu3O7-x and NdBa2Cu3O7-x thin films. For the La2-xSrxCuO4 films, our data demonstrate the coexistence, in the superconducting state, of two coupled subsystems with different relaxation times and different contributions to the optical reflectivity. One subsystem is associated with the superconducting phase. By contrast. the data from YBa2Cu3O7-x, and NdBa2Cu3O7-x shows that the coupling between the two subsystems is weak or absent.
Type
research article
Web of Science ID
WOS:000172557700071
Authors
Rast, S
•
Schneider, ML
•
Onellion, M
•
Zeng, XH
•
Si, WD
•
Xi, XX
•
•
•
•
Ren, YH
Publication date
2001
Published in
Volume
64
Issue
21
Article Number
214505
Peer reviewed
REVIEWED
EPFL units
Available on Infoscience
February 23, 2007
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