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arXiv 0712.0308cond-mat.stat-mechcond-mat.supr-con
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晶格不稳定性引起的集体棘轮电流反转

Current reversal in collective ratchets induced by lattice instability

L. Dinis, E. M. Gonzalez, J. V. Anguita, J. M. R. Parrondo, J. L. Vicent

摘要:

本文提出了超导涡旋棘轮中电流反转的集体机制。该机制是基于系统的基态(T=0)的二维不稳定性。我们用数值模拟和实验来说明我们的结果,在Si衬底上制造的Nb超导薄膜与人工诱导的非对称钉扎中心。

英文摘要:

A collective mechanism for current reversal in superconducting vortex ratchets is proposed. The mechanism is based on a two-dimensional instability of the ground state (T=0) of the system. We illustrate our results with numerical simulations and experiments in Nb superconducting films fabricated on top of Si substrates with artificially induced asymmetric pinning centers.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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