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

0537945 - FZÚ 2021 RIV US eng J - Journal Article
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
Institutional support: RVO:68378271
Keywords : X-ray absorption * magnetism * metallic heterostructures * Green's function * First-principle calculations
OECD category: Condensed matter physics (including formerly solid state physics, supercond.)
Method of publishing: 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.

Permanent Link: http://hdl.handle.net/11104/0316004