Abnormal magnetoresistance behavior in Nb thin films with rectangular arrays of antidots

被引：3

作者：

Zhang, Wei-Jun ^{[1
]}

He, Shi-Kun ^{[1
]}

Li, Bo-Hong ^{[1
]}

Cheng, Fei ^{[1
]}

Xu, Bing ^{[1
]}

Wen, Zhen-Chao ^{[1
]}

Cao, Wen-Hui ^{[1
]}

Xiao, Hong ^{[1
]}

Han, Xiu-Feng ^{[1
]}

Zhao, Shi-Ping ^{[1
]}

Qiu, Xiang-Gang ^{[1
]}

机构：

[1] Chinese Acad Sci, Inst Phys, Beijing Natl Lab Condensed Matter Phys, Beijing 100190, Peoples R China

来源：

CHINESE PHYSICS B | 2012年 / 21卷 / 07期

基金：

美国国家科学基金会;

关键词：

magnetoresistance; caging effect; rectangular arrays of antidots; SUPERCONDUCTING FILMS; VORTEX-LATTICE; DOTS; DYNAMICS; SIZE;

D O I：

10.1088/1674-1056/21/7/077401

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Magnetoresistance in superconducting Nb films perforated with rectangular arrays of antidots (holes) is investigated at various temperatures and currents. Normally, the magnetoresistance increases with the increasing magnetic field. In this paper, we report a reverse behavior in a certain range of high fields after vortex reconfiguration transition, where the resistances at non-matching fields are smaller than those in the low field regime. This phenomenon is due to a strong caging effect, in which the interstitial vortices are trapped among the pinned multiquanta vortices. This effect is temperature and current dependent.

引用

页数：4

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