Theory of charge-spin conversion at oxide interfaces: the inverse spin-galvanic effect

Götz Seibold; Sergio Caprara; Roberto Raimondi

doi:10.1117/12.2319592

20 September 2018 Theory of charge-spin conversion at oxide interfaces: the inverse spin-galvanic effect

Götz Seibold, Sergio Caprara, Roberto Raimondi

Proceedings Volume 10732, Spintronics XI; 107322P (2018) https://doi.org/10.1117/12.2319592
Event: SPIE Nanoscience + Engineering, 2018, San Diego, California, United States

Abstract

We evaluate the non-equilibrium spin polarization induced by an applied electric field for a tight-binding model of electron states at oxides interfaces in LAO/STO heterostructures. By a combination of analytic and numerical approaches we investigate how the spin texture of the electron eigenstates due to the interplay of spin-orbit coupling and inversion asymmetry determines the sign of the induced spin polarization as a function of the chemical potential or band filling, both in the absence and presence of local disorder. With the latter, we find that the induced spin polarization evolves from a non monotonous behavior at zero temperature to a monotonous one at higher temperature. Our results may provide a sound framework for the interpretation of recent experiments.

Conference Presentation

Citation Download Citation

Götz Seibold, Sergio Caprara, and Roberto Raimondi "Theory of charge-spin conversion at oxide interfaces: the inverse spin-galvanic effect", Proc. SPIE 10732, Spintronics XI, 107322P (20 September 2018); https://doi.org/10.1117/12.2319592

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