Optical Cooper pair breaking spectroscopy of cuprate superconductors - art. no. 132507

Authors
Zhao, YG Li, E Wu, T Ogale, SB Sharma, RP Venkatesan, T Li, JJ Cao, WL Lee, CH Sato, H Naito, M
Citation
Yg. Zhao et al., Optical Cooper pair breaking spectroscopy of cuprate superconductors - art. no. 132507, PHYS REV B, 6313(13), 2001, pp. 2507
Citations number
43
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
PHYSICAL REVIEW B
ISSN journal
01631829 → ACNP
Volume
6313
Issue
13
Year of publication
2001
Database
ISI
SICI code
0163-1829(20010401)6313:13<2507:OCPBSO>2.0.ZU;2-M
Abstract
The photon energy dependence of the optical Cooper pair breaking rate (CPBR ) is studied for compressibly strained La1.85Sr0.15CuO4 (LSCO) films and YB a2Cu2.92Zn0.08O7-delta (YBCZO) thin films, and compared to that in YBa2Cu3O 7-delta (YBCO). Unlike YBCO, the CPBR for LSCO does not show an obvious pho ton energy dependence. In YBCZO, the CPBR shows a strong energy dependence similar to YBCO, but with a redshift in the peak position. Analysis of thes e results strongly favors a physical picture based on electronic phase sepa ration in high-Tc superconductivity.