Theory of circular dichroism in resonant inelastic x-ray scattering

Kód výsledku v 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>

Výsledek na webu

<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>

Jazyk výsledku

angličtina

Název v původním jazyce

Theory of circular dichroism in resonant inelastic x-ray scattering

Popis výsledku v původním jazyce

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 &amp; 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.

Název v anglickém jazyce

Theory of circular dichroism in resonant inelastic x-ray scattering

Popis výsledku anglicky

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 &amp; 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.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10302 - Condensed matter physics (including formerly solid state physics, supercond.)

Projekt

<a href="/cs/project/EH22_008%2F0004572" target="_blank" >EH22_008/0004572: Kvantové materiály pro aplikace v udržitelných technologiích</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2025

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

PHYSICAL REVIEW B

ISSN

2469-9950

e-ISSN

2469-9969

Svazek periodika

112

Číslo periodika v rámci svazku

21

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

12

Strana od-do

1-12

Kód UT WoS článku

001642486200008

EID výsledku v databázi Scopus

2-s2.0-105027634259