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arXiv 2109.01966cond-mat.supr-con
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各向异性超导薄膜中的珍珠涡旋

Pearl vortices in anisotropic superconducting films

V. G. Kogan, N. Nakagawa, J. R. Kirtley

摘要:

在各向异性London方法的框架下研究了各向异性超导薄膜中涡旋的磁场。据发现,在相对于核心尺寸较大的距离,垂直于薄膜表面的磁场可能会改变符号。我们发现,磁场衰减在大的距离$1/r^3$,因为它在各向同性的薄膜,但各向异性诱导的角度依赖性的超电流,导致该领域的符号改变各向异性参数$γ=λ_2/λ_1>\sqrt{2}$在某些部分的$(x,y)$平面。

英文摘要:

The magnetic field of vortices in anisotropic superconducting films is considered in the framework of anisotropic London approach. It is found that at distances large relative to the core size, the magnetic field normal to the film surface may change sign. We find that the magnetic field attenuates at large distances as $1/r^3$ as it does in isotropic films, but the anisotropy induces an angular dependence to the supercurrents which causes the sign of the field to change for anisotropy parameters $γ=λ_2/λ_1>\sqrt{2}$ in some parts of the $(x,y)$ plane.

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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