<Research Report>Inhomogeneous non-centrosymmetric superconductors in a magnetic field

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  • 青山 和司
    The Hakubi Center for Advanced Research, Kyoto University/Department of Physics, Kyoto University

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  • <研究ノート>磁場下の非一様な空間反転対称性の破れた超伝導体
  • 磁場下の非一様な空間反転対称性の破れた超伝導体
  • ジバ カ ノ ヒイチヨウ ナ クウカン ハンテン タイショウセイ ノ ヤブレタ チョウデンドウタイ

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The effect of spatial inhomogeneity on the properties of non-centrosymmetric superconductors in an in-plane magnetic field is investigated, as it can be realized in LaAlO3-SrTiO3 interfaces. We demonstrate that the spatial variation of Rashba spin-orbit coupling (RSOC) yields a local magnetic flux pattern due to the field-induced inhomogeneous helical phase. For sufficiently strong fields, vortices perpendicular to the applied field can nucleate at inhomogeneities of the RSOC.

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