Towards robust dichroism in angle-resolved photoemission

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F49777513%3A23640%2F24%3A43972529" target="_blank" >RIV/49777513:23640/24:43972529 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1038/s42005-024-01762-y" target="_blank" >https://doi.org/10.1038/s42005-024-01762-y</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1038/s42005-024-01762-y" target="_blank" >10.1038/s42005-024-01762-y</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Towards robust dichroism in angle-resolved photoemission

Popis výsledku v původním jazyce

Dichroic techniques are highly relevant in the field of topological materials, layered systems, and spinpolarized electronic states. Dichroism in angle-resolved photoemission is per se a matrix element effect, which depends on the initial and final states as well as on the perturbation by the light field. Although matrix element effects in ARPES such as dichroism are important for addressing properties of the initial state wave functions, the results can strongly depend on experimental geometry or final state effects. Combining experimental data on bulk WSe2 taken at soft x-ray photon energies with state-of-the-art photoemission calculations, we demonstrate that a dichroic observable called timereversal dichroism remains unaffected against variation of photon energy, light polarization, and the angle of incidence. We demonstrate a direct link of TRDAD obtained with both linearly and circularly polarized photons to the initial state properties indicating its broad applicability. The robustness of this matrix element effect indicates a considerable benefit over other dichroic techniques and encourages further experimental and theoretical investigations.

Název v anglickém jazyce

Towards robust dichroism in angle-resolved photoemission

Popis výsledku anglicky

Dichroic techniques are highly relevant in the field of topological materials, layered systems, and spinpolarized electronic states. Dichroism in angle-resolved photoemission is per se a matrix element effect, which depends on the initial and final states as well as on the perturbation by the light field. Although matrix element effects in ARPES such as dichroism are important for addressing properties of the initial state wave functions, the results can strongly depend on experimental geometry or final state effects. Combining experimental data on bulk WSe2 taken at soft x-ray photon energies with state-of-the-art photoemission calculations, we demonstrate that a dichroic observable called timereversal dichroism remains unaffected against variation of photon energy, light polarization, and the angle of incidence. We demonstrate a direct link of TRDAD obtained with both linearly and circularly polarized photons to the initial state properties indicating its broad applicability. The robustness of this matrix element effect indicates a considerable benefit over other dichroic techniques and encourages further experimental and theoretical investigations.

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

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2024

Kód důvěrnosti údajů

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

Název periodika

Communications Physics

ISSN

2399-3650

e-ISSN

2399-3650

Svazek periodika

7

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

DE - Spolková republika Německo

Počet stran výsledku

6

Strana od-do

—

Kód UT WoS článku

001286513900002

EID výsledku v databázi Scopus

2-s2.0-85200851035