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arXiv 1807.07584cond-mat.supr-con
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用单自旋磁强计探测薄膜超导体的局域磁响应

Real-space probing of the local magnetic response of thin-film superconductors using single spin magnetometry

D. Rohner, L. Thiel, B. Müller, M. Kasperczyk, R. Kleiner, D. Koelle, P. Maletinsky

摘要:

我们报告的直接,真实空间成像的杂散磁场以上的微尺度盘的高温超导体YBa $_2$铜$_3$ O $_{7-δ}$(YBCO)的薄膜使用扫描单自旋磁强计。我们的实验产生的样品的本地伦敦渗透深度的直接测量,并允许作为迈斯纳筛选的结果在样品中流动的超电流的定量重建。这些结果表明,潜在的扫描单自旋磁强计的纳米尺度的薄膜超导体的磁性的研究,它可以很容易地扩展到高温或磁场。

英文摘要:

We report on direct, real-space imaging of the stray magnetic field above a micro-scale disc of a thin film of the high-temperature superconductor YBa$_2$Cu$_3$O$_{7-δ}$ (YBCO) using scanning single spin magnetometry. Our experiments yield a direct measurement of the sample's local London penetration depth and allow for a quantitative reconstruction of the supercurrents flowing in the sample as a result of Meissner screening. These results show the potential of scanning single spin magnetometry for studies of the nanoscale magnetic properties of thin-film superconductors, which could be readily extended to elevated temperatures or magnetic fields.

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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