Theory of circular dichroism in resonant inelastic x-ray scattering

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14310%2F25%3A00143587" target="_blank" >RIV/00216224:14310/25:00143587 - isvavai.cz</a>
Result on the web
<a href="https://journals.aps.org/prb/abstract/10.1103/x96x-znr8" target="_blank" >https://journals.aps.org/prb/abstract/10.1103/x96x-znr8</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1103/x96x-znr8" target="_blank" >10.1103/x96x-znr8</a>

Result language
angličtina
Original language name
Theory of circular dichroism in resonant inelastic x-ray scattering
Original language description
We analyze circular dichroism (CD) in resonant inelastic x-ray scattering (RIXS) in magnetic materials. We define RIXS-CD as the difference between scattering amplitudes for the right- and left-circularly polarized incoming photons and unpolarized (total) outgoing photons. We employ the impurity approximation, in which the interference between scattering events on different atoms is neglected. We perform a symmetry analysis of several common antiferromagnetic and altermagnetic structures and outline a general approach. This analysis is supported by numerical calculations using an atomic model with realistic crystal fields obtained from first principles. We show that RIXS-CD is distinguished from first-order spectroscopies such as x-ray magnetic circular dichroism by its insensitivity to the time-reversal symmetry breaking. As a result we find that RIXS-CD is present in the paramagnetic state of materials with lower symmetry. In antiferromagnets the RIXS-CD is invariant under N & eacute;el vector reversal. In altermagnets and ferromagnets the RIXS-CD spectra for time-reversed states are, in general, independent, except for the special case when there is a unitary symmetry of the Hamiltonian connecting the two states.
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
<a href="/en/project/EH22_008%2F0004572" target="_blank" >EH22_008/0004572: Quantum materials for applications in sustainable technologies</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2025
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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