Theory of charge-spin conversion at oxide interfaces: the inverse spin-galvanic effect
- 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.
Author: | Götz SeiboldORCiD, Sergio CapraraORCiD, Roberto Raimondi |
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URL: | https://www.spiedigitallibrary.org/conference-proceedings-of-spie/10732/107322P/Theory-of-charge-spin-conversion-at-oxide-interfaces--the/10.1117/12.2319592.short |
DOI: | https://doi.org/10.1117/12.2319592 |
Title of the source (English): | Spintronics XI, SPIE Nanoscience + Engineering, 19-23 August 2018, San Diego, California, United States |
Publisher: | Spie |
Place of publication: | Bellingham, USA |
Editor: | Henri-Jean Drouhin, Jean-Eric Wegrowe, Manijeh Razeghi, Henri Jaffrès |
Document Type: | Conference Proceeding |
Language: | English |
Year of publication: | 2018 |
Series ; volume number: | Proceedings of SPIE ; 10732 |
Article number: | 107322P |
Faculty/Chair: | Fakultät 1 MINT - Mathematik, Informatik, Physik, Elektro- und Informationstechnik / FG Computational Physics |