Investigation of the symmetry of the pairing state in YBa2Cu3O7-delta using the nonlinear transverse magnetic moment: Experimental results

Authors
Bhattacharya, A Goldman, AM Zutic, I Valls, OT Welp, U Veal, B
Citation
A. Bhattacharya et al., Investigation of the symmetry of the pairing state in YBa2Cu3O7-delta using the nonlinear transverse magnetic moment: Experimental results, J SUPERCOND, 12(1), 1999, pp. 99-103
Citations number
14
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
JOURNAL OF SUPERCONDUCTIVITY
ISSN journal
08961107 → ACNP
Volume
12
Issue
1
Year of publication
1999
Pages
99 - 103
Database
ISI
SICI code
0896-1107(199902)12:1<99:IOTSOT>2.0.ZU;2-V
Abstract
Measurements of the nonlinear transverse magnetic moment have been carried out on disk-shaped samples of YBCO, using an ac technique. Numerical calcul ations for a d(x2-y2) pairing state predict a fourfold modulation of this m oment as a function of the angle between the applied magnetic and the cryst alline axes for a magnetic field applied in the a-b plane of the sample. Ou r results imply a minimum nonzero gap at all points on the Fermi surface.