Interstitial vortex in superconducting film with periodic hole arrays  

作　　者：何世坤 张伟君 温振超 肖宏 韩秀峰 顾长志 邱祥冈 

机构地区：[1]Beijing National Laboratory for Condensed Matter Physics,Institute of Physics,Chinese Academy of Sciences

出　　处：《Chinese Physics B》2012年第8期1-5,共5页中国物理B（英文版）

基　　金：Project supported by the National Basic Research Program of China (Grant Nos. 2009CB929100 and 2011CBA00107);the National Natural Science Foundation of China (Grant Nos. 91121004,10974241,and 11104335)

摘　　要：The response of superconducting Nb films with a diluted triangular and square array of holes to a perpendicular magnetic field are investigated. Due to small edge-to-edge separation of the holes, the patterned films are similar to multi-connected superconducting islands. Two regions in the magnetoresistance R（H） curves can be identified according to the field intervals of the resistance minima. Moreover, in between these two regions, variation of the minima spacing was observed. Our results provide strong evidence of the coexistence of interstitial vortices in the islands and fluxoids in the holes.The response of superconducting Nb films with a diluted triangular and square array of holes to a perpendicular magnetic field are investigated. Due to small edge-to-edge separation of the holes, the patterned films are similar to multi-connected superconducting islands. Two regions in the magnetoresistance R（H） curves can be identified according to the field intervals of the resistance minima. Moreover, in between these two regions, variation of the minima spacing was observed. Our results provide strong evidence of the coexistence of interstitial vortices in the islands and fluxoids in the holes.

关 键 词：matching effect interstitial vortex 

分 类 号：TB383.2[一般工业技术—材料科学与工程]