Model for magnetic flux pattern induced by in-plane magnetic fields on spatially inhomogeneous superconducting interfaces of LaAlO_3-SrTiO_3

Abstract

The effect of spatial inhomogeneity on the properties of a two-dimensional non-centrosymmetric superconductor in an in-plane magnetic field is investigated, as it can be realized in LaAlO_3-SrTiO_3 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 can nucleate at inhomogeneities of the RSOC.

5 pages, 3 figures, accepted for publication in PRL

References in corpus (4)

• Electric Field Control of the LaAlO${}_3$/SrTiO${}_3$ Interface Ground State
• Fractional flux quanta at intrinsic metallic interfaces of noncentrosymmetric superconductors
• Chain of Majorana States from Superconducting Dirac Fermions at a Magnetic Domain Wall
• Modulated vortex states in Rashba non-centrosymmetric superconductors

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