Dependence of the magnitude and direction of the persistent current on the magnetic flux in superconducting rings

被引：21

作者：

Gurtovoi, V. L. ^{[1
]}

Dubonos, S. V. ^{[1
]}

Nikulov, A. V. ^{[1
]}

Osipov, N. N. ^{[1
]}

Tulin, V. A. ^{[1
]}

机构：

[1] Russian Acad Sci, Inst Microelect Technol & High Pur Mat, Chernogolovka 142432, Moscow Oblast, Russia

来源：

JOURNAL OF EXPERIMENTAL AND THEORETICAL PHYSICS | 2007年 / 105卷 / 06期

基金：

俄罗斯基础研究基金会;

关键词：

D O I：

10.1134/S1063776107120072

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The obtained periodic magnetic-field dependences Ic+(Phi/Phi(0)) and I-c-(Phi/Phi(0)) of the critical current measured in opposite directions on asymmetric superconducting aluminum rings has made it possible to explain previously observed quantum oscillations of dc voltage as a result of alternating current rectification. It was found that a higher rectification efficiency of both single rings and ring systems is caused by hysteresis of the current-voltage characteristics. The asymmetry of current-voltage characteristics providing the rectification effect is due to the relative shifts of the magnetic dependences Ic+(Phi/Phi(0)) = Ic+(Phi/Phi(0) + Delta phi) of the critical current measured in opposite directions. This shift means that the position of I-c,I- (an)(Phi/Phi(0)) = Ic+(Phi/Phi(0)) -Ic-(Phi/Phi(0)) of critical current anisotropy oscillations and its variations with temperature correspond to the expected amplitude of persistent current oscillations and its variations with temperature.

引用

页码：1157 / 1173

页数：17

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