QUANTUM DEPINNING OF FLUX LINES FROM COLUMNAR DEFECTS

被引：23

作者：

CHUDNOVSKY, EM ^{[1
]}

FERRERA, A ^{[1
]}

VILENKIN, A ^{[1
]}

机构：

[1] TUFTS UNIV,DEPT PHYS,MEDFORD,MA 02155

来源：

PHYSICAL REVIEW B | 1995年 / 51卷 / 02期

关键词：

D O I：

10.1103/PhysRevB.51.1181

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The depinning of a flux line from a columnar defect is studied within the path-integral approach. Instantons of the quantum field theory in 1+1 dimensions are computed for the flux line whose dynamics is dominated by the Magnus force. The universal temperature dependence of the decay rate in the proximity of the critical current is obtained. This problem provides an example of macroscopic quantum tunneling, which is accessible to the direct comparison between theory and experiment. © 1995 The American Physical Society.

引用

页码：1181 / 1184

页数：4

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