Fingerprints of Mott and Slater gaps in the core-level photoemission spectra of antiferromagnetic iridates

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F25%3A00635571" target="_blank" >RIV/68378271:_____/25:00635571 - isvavai.cz</a>
Alternative codes found
RIV/00216224:14310/25:00141250
Result on the web
<a href="https://doi.org/10.1103/PhysRevB.111.195114" target="_blank" >https://doi.org/10.1103/PhysRevB.111.195114</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1103/PhysRevB.111.195114" target="_blank" >10.1103/PhysRevB.111.195114</a>

Result language
angličtina
Original language name
Fingerprints of Mott and Slater gaps in the core-level photoemission spectra of antiferromagnetic iridates
Original language description
We present Ir 4⁢f core-level hard-x-ray photoemission spectroscopy (HAXPES) experiments conducted across the antiferromagnetic (AFM) ordering transition in Ruddlesden-Popper iridates Sr2⁢IrO4 and Sr3⁢Ir2⁢O7. The Ir 4⁢f spectra exhibit distinct changes between the AFM and paramagnetic (PM) phases, with the spectral difference IPM−IAFM showing a contrasting behavior in the two compounds. By employing computational simulations using the local density approximation combined with the dynamical mean-field theory method, we elucidate that IPM−IAFM primarily reflects the Slater or Mott-Hubbard character of the AFM insulating state rather than material-specific details, such as crystal and/or band structures. This sensitivity to fine low-energy electronic structure arises from the dependence of charge-transfer responses to the sudden creation of a localized core hole on both metal-insulator transitions and long-range AFM ordering. Our result broadens the applications of core-level HAXPES as a tool for characterization of electronic structure in 5⁢d transition-metal compounds.
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
—
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
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

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

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