First principles calculations of steady-state voltage-controlled magnetism: application to x-ray absorption spectroscopy experiments

0537945 - FZÚ 2021 RIV US eng J - Článek v odborném periodiku
Marmodoro, A. - Wimmer, S. - Šipr, Ondřej - Ogura, M. - Ebert, H.
First principles calculations of steady-state voltage-controlled magnetism: application to x-ray absorption spectroscopy experiments.
Physical Review Research. Roč. 2, č. 3 (2020), s. 1-6, č. článku 032067. E-ISSN 2643-1564
Institucionální podpora: RVO:68378271
Klíčová slova: X-ray absorption * magnetism * metallic heterostructures * Green's function * First-principle calculations
Obor OECD: Condensed matter physics (including formerly solid state physics, supercond.)
Způsob publikování: Open access

Recent x-ray absorption experiments have demonstrated the possibility to accurately monitor the magnetism of metallic heterostructures controlled via a time-independent perturbation caused, for example, by a static electric field. Using a first-principles, nonequilibrium Green's function scheme, we show how the measured dichroic signal for the corresponding steady-state situation can be related to the underlying electronic structure and its response to the external stimulus. The suggested approach works from the infinitesimal limit of linear response to the regime of strong electric field effec ts, which is realized in present experimental high-sensitivity investigations.

Trvalý link: http://hdl.handle.net/11104/0316004