UNSPECIFIED. (1999) Fourfold basal plane anisotropy of the nonlocal magnetization of YNi2B2C. PHYSICAL REVIEW LETTERS, 83 (19). pp. 3920-3923. ISSN 0031-9007

Abstract

Studies of single crystal YNi2B2C have revealed a fourfold anisotropy of the equilibrium maenetization in the square crystallographic basal plane. This pi/2 periodicity occurs deep in the superconductive mixed state. In this crystal symmetry, an ordinary superconductive mass anisotropy (as in usual London theory) allows only a constant, isotropic response. In contrast, the experimental results are well described by generalized London theory incorporating nonlocal electrodynamics, as needed for this clean, intermediate-kappa superconductor.

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