Determination of in-plane anisotropy from magnetoresistivity measurements on YBa2Cu3O7-delta

Authors
Axnas, J Eltsev, Y Rapp, O
Citation
J. Axnas et al., Determination of in-plane anisotropy from magnetoresistivity measurements on YBa2Cu3O7-delta, J L TEMP PH, 117(5-6), 1999, pp. 1247-1251
Citations number
8
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
JOURNAL OF LOW TEMPERATURE PHYSICS
ISSN journal
00222291 → ACNP
Volume
117
Issue
5-6
Year of publication
1999
Pages
1247 - 1251
Database
ISI
SICI code
0022-2291(199912)117:5-6<1247:DOIAFM>2.0.ZU;2-L
Abstract
The magnetoresistance of sis untwinned YBa2Cu3O7-delta crystals has been me asured above T-c for I perpendicular to B parallel to c. Fluctuation theori es allowing for an in-plane coherence length anisotropy (xi(a) not equal xi (b)) were used in the analyses. The results suggest that the anisotropy, ga mma = xi(b)/xi(a), is considerably lower than that expected from the resist ivity ratio, i.e., gamma < root rho(a)/rho(b). Some magnetoresistive measur ements with the field in the ab-plane are also presented.