MEASUREMENT OF THE AB PLANE ANISOTROPY OF MICROWAVE SURFACE IMPEDANCEOF UNTWINNED YBA2CU3O6.95 SINGLE-CRYSTALS

Authors
ZHANG K BONN DA KAMAL S LIANG RX BAAR DJ HARDY WN BASOV D TIMUSK T
Citation
K. Zhang et al., MEASUREMENT OF THE AB PLANE ANISOTROPY OF MICROWAVE SURFACE IMPEDANCEOF UNTWINNED YBA2CU3O6.95 SINGLE-CRYSTALS, Physical review letters, 73(18), 1994, pp. 2484-2487
Citations number
22
Categorie Soggetti
Physics
Journal title
Physical review letters → ACNP
ISSN journal
00319007
Volume
73
Issue
18
Year of publication
1994
Pages
2484 - 2487
Database
ISI
SICI code
0031-9007(1994)73:18<2484:MOTAPA>2.0.ZU;2-C
Abstract
The temperature dependence of the surface resistance R(s) and the pene tration depth lambda has been measured in both a and b directions in Y ba(2)Cu(3)O(6.95). The overall temperature dependences are similar and show a linear behavior at low T. This argues against the chains playi ng a direct role in the unconventional behavior of the surface impedan ce. The residual R(s) of these twin-free crystals is very small, imply ing a residual conductivity of the order of the minimum value predicte d by Lee [Phys. Rev. Lett. 71, 1887 (1993)] for a d-wave superconducto r.