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arXiv 1401.0995cond-mat.supr-concond-mat.dis-nncond-mat.mes-hallcond-mat.softcond-mat.stat-mech
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平面上超导涡旋的无序诱导幂律响应

Disorder induced power-law response of a superconducting vortex on a plane

N. Shapira, Y. Lamhot, O. Shpielberg, Y. Kafri, B. J. Ramshaw, D. A. Bonn, Ruixing Liang, W. N. Hardy, O. M. Auslaender

摘要:

我们报告驱动响应实验上的个人超导涡旋在一个平面上,实现1+1维定向聚合物在随机介质。为此,我们使用磁力显微镜(MFM)的图像和操纵个人的涡旋被困在最佳掺杂附近的YBCO的孪生边界。我们发现,当我们用磁尖拖动一个漩涡时,它会发生一系列的跳跃。正如理论所表明的那样,跳跃大小分布不依赖于所施加的力,并且与幂律行为一致。测得的功率比广泛接受的理论计算大得多。

英文摘要:

We report drive-response experiments on individual superconducting vortices on a plane, a realization for a 1+1-dimensional directed polymer in random media. For this we use magnetic force microscopy (MFM) to image and manipulate individual vortices trapped on a twin boundary in YBCO near optimal doping. We find that when we drag a vortex with the magnetic tip it moves in a series of jumps. As theory suggests the jump-size distribution does not depend on the applied force and is consistent with power-law behavior. The measured power is much larger than widely accepted theoretical calculations.

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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