CRITICAL-CURRENT HYSTERESIS OF SUPERCONDUCTING PROXIMITY-EFFECT BRIDGES UNDER PHONON INJECTION

被引：8

作者：

DHARMADURAI, G ^{[1
]}

RATNAM, BA ^{[1
]}

机构：

[1] TATA INST FUNDAMENTAL RES,BOMBAY 400005,INDIA

来源：

PHYSICAL REVIEW B | 1979年 / 19卷 / 11期

关键词：

D O I：

10.1103/PhysRevB.19.5711

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A dc electric current is injected through the transverse normal-metal strip of Ag-Sn proximity-effect bridges to generate phonons which propagate through and further weaken the superconductivity in the proximity-effect-induced weak region by creating quasiparticles (by pair-breaking mechanisms). Consequently a decrease of the critical-current hysteresis is observed in the current-voltage characteristics of these bridges. These results cannot be adequately accounted for by simple heating. Further, we find that Parker's modified heating theory of nonequilibrium superconductors has to be invoked for a qualitative understanding of the observed phenomena. © 1979 The American Physical Society.

引用

页码：5711 / 5715

页数：5

共 21 条

[1] NEW INSTABILITY IN SUPERCONDUCTORS UNDER EXTERNAL DYNAMIC PAIR BREAKING [J].