Singlet magnetism in intermetallic UGa2 unveiled by inelastic x-ray scattering

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F23%3A00577485" target="_blank" >RIV/68378271:_____/23:00577485 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/00216208:11320/23:10468811

Výsledek na webu

<a href="https://hdl.handle.net/11104/0346614" target="_blank" >https://hdl.handle.net/11104/0346614</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1103/PhysRevB.108.045142" target="_blank" >10.1103/PhysRevB.108.045142</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Singlet magnetism in intermetallic UGa2 unveiled by inelastic x-ray scattering

Popis výsledku v původním jazyce

Using high resolution tender x-ray resonant inelastic scattering and hard x-ray nonresonant inelastic scattering beyond the dipole limit we were able to detect electronic excitations in intermetallic UGa2 that are highly atomic in nature. Analysis of the spectral lineshape reveals that the local 5f2 configuration characterizes the correlated nature of this ferromagnet. The orientation and directional dependence of the spectra indicate that the ground state is made of the Γ1 singlet and/or Γ6 doublet symmetry. With the ordered moment in the ab plane, we infer that the magnetism originates from the higher lying Γ6 doublet being mixed with the Γ1 singlet due to intersite exchange, qualifying UGa2 to be a true quantum magnet. The ability to observe atomic excitations is crucial to resolve the ongoing debate about the degree of localization versus itineracy in U intermetallics.

Název v anglickém jazyce

Singlet magnetism in intermetallic UGa2 unveiled by inelastic x-ray scattering

Popis výsledku anglicky

Using high resolution tender x-ray resonant inelastic scattering and hard x-ray nonresonant inelastic scattering beyond the dipole limit we were able to detect electronic excitations in intermetallic UGa2 that are highly atomic in nature. Analysis of the spectral lineshape reveals that the local 5f2 configuration characterizes the correlated nature of this ferromagnet. The orientation and directional dependence of the spectra indicate that the ground state is made of the Γ1 singlet and/or Γ6 doublet symmetry. With the ordered moment in the ab plane, we infer that the magnetism originates from the higher lying Γ6 doublet being mixed with the Γ1 singlet due to intersite exchange, qualifying UGa2 to be a true quantum magnet. The ability to observe atomic excitations is crucial to resolve the ongoing debate about the degree of localization versus itineracy in U intermetallics.

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/GA21-09766S" target="_blank" >GA21-09766S: Magnetismus a elektronová struktura aktinoidů laděná ionicitou</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2023

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

108

Číslo periodika v rámci svazku

4

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

9

Strana od-do

045142

Kód UT WoS článku

001103167400001

EID výsledku v databázi Scopus

2-s2.0-85166734282