Influence of a static electric field on magnetic materials monitored by X-ray magnetic circular dichroism

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F23%3A00579216" target="_blank" >RIV/68378271:_____/23:00579216 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.1016/j.elspec.2023.147386" target="_blank" >https://doi.org/10.1016/j.elspec.2023.147386</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.elspec.2023.147386" target="_blank" >10.1016/j.elspec.2023.147386</a>

Result language
angličtina
Original language name
Influence of a static electric field on magnetic materials monitored by X-ray magnetic circular dichroism
Original language description
The magnetic circular X-ray dichroism (XMCD) in X-ray absorption spectroscopy (XAS) is used to monitor response of a magnetic system to an external perturbation. Application of a static external electric field may just lead to a charge rearrangement or to a steady electric current. The first situation can be handled with minor modifications of the standard well established schemes to calculate XAS and XMCD spectra. For the second case, more advanced schemes have to be used that account for the steady-state out-of-equilibrium situation. It is shown, that this can indeed be achieved by making use of the Keldysh non-equilibrium Green function formalism to express in particular the X-ray absorption coefficient in terms of the corresponding greater Green function. As an alternative approach, a bi-linear response formalism is presented that can be used to calculate the modification of the XMCD spectra due to the electric field directly.n
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10302 - Condensed matter physics (including formerly solid state physics, supercond.)

Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2023
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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