Interstitial vortex in superconducting film with periodic hole arrays

doi:10.1088/1674-1056/21/8/087401

Abstract The response of superconducting Nb films with diluted triangular and square array of holes to 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 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.

Keywords: matching effect interstitial vortex

Received: 04 March 2012
Revised: 14 April 2012
Accepted manuscript online:

PACS:	74.25.Ha	(Magnetic properties including vortex structures and related phenomena)
	74.78.Na	(Mesoscopic and nanoscale systems)

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

Corresponding Authors: Qiu Xiang-Gang
E-mail: xgqiu@iphy.ac.cn

Cite this article:

He Shi-Kun (何世坤), Zhang Wei-Jun (张伟君), Wen Zhen-Chao (温振超), Xiao Hong (肖宏), Han Xiu-Feng (韩秀峰), Gu Chang-Zhi (顾长志), Qiu Xiang-Gang (邱祥冈 ) Interstitial vortex in superconducting film with periodic hole arrays 2012 Chin. Phys. B 21 087401

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