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Title: Mechanisms of Vortex Pinning by Graded Triangular Arrays of Submicrometric Defects in a Superconducting Nb Film
Authors: Wu, T. C.;Horng, Lance;Wu, Jong-Ching;Kolacek, J.;Hsio, C. W.;Yang, T. J.
Contributors: 物理學系
Date: 2005
Issue Date: 2014-07-01T08:04:37Z
Publisher: American Physical Society
Abstract: We have investigated the periodic pinning of magnetic flux quanta in the Nb films with graded triangular arrays of submicrometer defects. Arrays of pinning centers with a spacing of about 425nm to 375 nm and a diameter of about 250nm were fabricated by the electron beam lithography. In the mixed states, the minima of magnetoresistance and maxima of critical current as a function of magnetic field appear at certain values of magnetic field corresponding to the flux quanta calculation of the lattice spacing of the homogenous ones (400nm). A comparison of will be discussed graded and homogenous triangular arrays.
Relation: Bulletin of the American Physical Society, 2005 APS March Meeting, 50: 206
Appears in Collections:[Department of Physics] Proceedings

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