MAGNETIC-FIELD VARIANCE IN LAYERED SUPERCONDUCTORS

被引:100
作者
BRANDT, EH
机构
[1] AT and T Bell Laboratories, Murray Hill
关键词
D O I
10.1103/PhysRevLett.66.3213
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
In highly anisotropic or layered high-T(c) superconductors with magnetic field along the c axis, both pinning-caused and thermal fluctuations of the highly flexible vortex cores, or of chains of vortex dots, threading the superconducting layers may drastically reduce the variance-sigma of the magnetic-field fluctuation. In contrast, the fluctuations of the averaged flux lines (smoothed over the in-plane penetration depth-lambda) increase-sigma. As a consequence, muon-spin-rotation lines may be sharpened not only by thermal motional narrowing, but also by pinning-caused static disorder.
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页码:3213 / 3216
页数:4
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