NONLOCAL INPLANE RESISTANCE DUE TO VORTEX-ANTIVORTEX DYNAMICS IN HIGH-T-C SUPERCONDUCTING FILMS

Authors
KOPELEVICH Y CIOVACCO F ESQUINAZI P LORENZ M
Citation
Y. Kopelevich et al., NONLOCAL INPLANE RESISTANCE DUE TO VORTEX-ANTIVORTEX DYNAMICS IN HIGH-T-C SUPERCONDUCTING FILMS, Physical review letters, 80(18), 1998, pp. 4048-4051
Citations number
23
Categorie Soggetti
Physics
Journal title
Physical review letters → ACNP
ISSN journal
00319007
Volume
80
Issue
18
Year of publication
1998
Pages
4048 - 4051
Database
ISI
SICI code
0031-9007(1998)80:18<4048:NIRDTV>2.0.ZU;2-N
Abstract
In high-T-c superconducting YBa(2)Cu(3)O7-delta films and at no applie d magnetic field we found both positive and negative in-plane nonlocal resistance in the vicinity of a vortex-antivortex unbinding transitio n, as it was predicted recently. The sign of the nonlocal resistance d epends on the probed region in the current-temperature diagram. Our re sults indicate that a negative nonlocal resistance is due to the motio n of unbounded vortex-antivortex (V-A), whereas a positive sign is att ributed to the motion of a 2D V-A ordered lattice.