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題名: | Mechanisms of Vortex Pinning by Graded Triangular Arrays of Submicrometric Defects in a Superconducting Nb Film |
作者: | Wu, T. C.;Horng, Lance;Wu, Jong-Ching;Kolacek, J.;Hsio, C. W.;Yang, T. J. |
貢獻者: | 物理學系 |
日期: | 2005
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上傳時間: | 2014-07-01T08:04:37Z
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出版者: | American Physical Society |
摘要: | 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. |
關聯: | Bulletin of the American Physical Society, 2005 APS March Meeting, 50: 206 |
顯示於類別: | [物理學系] 會議論文
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