COLLECTIVE VORTEX MOTION IN A-MOGE SUPERCONDUCTING THIN-FILMS

被引：57

作者：

WHITE, WR

KAPITULNIK, A

BEASLEY, MR

机构：

[1] Edward L. Ginzton Laboratories, Stanford University, Stanford

来源：

PHYSICAL REVIEW LETTERS | 1993年 / 70卷 / 05期

关键词：

D O I：

10.1103/PhysRevLett.70.670

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We report linear and nonlinear electrical transport in perpendicular magnetic fields of very thin amorphous Mo79Ge21 superconducting films. At low fields, we demonstrate the existence of a barrier to vortex motion away from the sample edges. In regimes where the vortex motion is not substantially affected by the sample edges, we observe manifestly collective activated behavior. We relate the field dependence of the observed activation energies to possible mobile configurations of vortices.

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页码：670 / 673

页数：4

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