EVIDENCE FOR MULTICOMPONENT SUPERCONDUCTING ORDER-PARAMETER FROM MICROWAVE MEASUREMENTS OF YBA2CU3O7-DELTA SINGLE-CRYSTALS

Authors
SRIDHAR S SRIKANTH H ZHAI Z WILLEMSEN BA JACOBS T ERB A WALKER E FLUKIGER R
Citation
S. Sridhar et al., EVIDENCE FOR MULTICOMPONENT SUPERCONDUCTING ORDER-PARAMETER FROM MICROWAVE MEASUREMENTS OF YBA2CU3O7-DELTA SINGLE-CRYSTALS, Physica. C, Superconductivity, 282, 1997, pp. 256-259
Citations number
28
Categorie Soggetti
Physics, Applied
Journal title
Physica. C, Superconductivity → ACNP
ISSN journal
09214534
Volume
282
Year of publication
1997
Part
1
Pages
256 - 259
Database
ISI
SICI code
0921-4534(1997)282:<256:EFMSOF>2.0.ZU;2-#
Abstract
The microwave complex conductivity in the superconducting state (sigma (s) = sigma(1) - i sigma(2)) of high quality YBa2Cu3O7-delta single cr ystals measured at 10GHz using a high-Q Nb cavity reveal two new featu res - (i) A new peak in sigma(1) at similar to 80K and (ii) enhanced p air conductivity sigma(2) below similar to 65K. The results indicate t wo pairing temperature scales and point to a multi-component supercond ucting order parameter in YBCO.