2018/08/28 by G. Seibold, Seibold, Goetz, S. Caprara +3
Engineering · Materials Science · #Electronic and Structural Properties of Oxides #FOS: Physical sciences #Magnetic and transport properties of perovskites and related materials #Mesoscale and Nanoscale Physics (cond-mat.mes-hall) #Semiconductor materials and devices
paper · pdf · doi:10.48550/arxiv.1808.09157
openalex publication_date 2018/08/28 · openalex created_date 2022/08/03 · openalex updated_date 2026/08/01
We evaluate the non-equilibrium spin polarization induced by an applied\nelectric field for a tight-binding model of electron states at oxides\ninterfaces in LAO/STO heterostructures. By a combination of analytic and\nnumerical approaches we investigate how the spin texture of the electron\neigenstates due to the interplay of spin-orbit coupling and inversion asymmetry\ndetermines the sign of the induced spin polarization as a function of the\nchemical potential or band filling, both in the absence and presence of local\ndisorder. With the latter, we find that the induced spin polarization evolves\nfrom a non monotonous behavior at zero temperature to a monotonous one at\nhigher temperature. Our results may provide a sound framework for the\ninterpretation of recent experiments.\n