Four-fold basal plane anisotropy of the nonlocal magnetization of YNi2B2C

Details Four-fold basal plane anisotropy of the nonlocal magnetization of YNi2B2C Four-fold basal plane anisotropy of the nonlocal magnetization of YNi2B2C

1999-08-31

arxiv.org/abs/cond-mat/9908483v1

Phys. Rev. Lett. 83, 3920 (1999)

Physics

Condensed Matter

Superconductivity

4 pages, 4 figures

Scientific paper

10.1103/PhysRevLett.83.3920

Studies of single crystal YNi2B2C have revealed a four-fold anisotropy of the equilibrium magnetization 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 non-local electrodynamics, as needed for this clean, intermediate-k superconductor.

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