Abnormal magnetoresistance behavior in Nb thin film with rectangular antidot lattice

Details Abnormal magnetoresistance behavior in Nb thin film with rectangular antidot lattice Abnormal magnetoresistance behavior in Nb thin film with rectangular antidot lattice

2011-11-16

arxiv.org/abs/1111.3862v2

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4 pages, 2 figures

Scientific paper

Abnormal magnetoresistance behavior is found in superconducting Nb films perforated with rectangular arrays of antidots (holes). Generally magnetoresistance were always found to increase with increasing magnetic field. Here we observed a reversal of this behavior for particular in low temperature or current density. This phenomenon is due to a strong 'caging effect' which interstitial vortices are strongly trapped among pinned multivortices.

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