ISSN:
1572-9605
Keywords:
Nonlinear Meissner effect
;
pairing state
;
YBCO
Source:
Springer Online Journal Archives 1860-2000
Topics:
Electrical Engineering, Measurement and Control Technology
,
Physics
Notes:
Abstract Measurements of the nonlinear transverse magnetic moment have been carried out on disk-shaped samples of YBCO, using an ac technique. Numerical calculations for a d x 2 - y 2 pairing state predict a fourfold modulation of this moment as a function of the angle between the applied magnetic and the crystalline axes for a magnetic field applied in the a–b plane of the sample. Our results imply a minimum nonzero gap at all points on the Fermi surface.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1023/A:1007738123479
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