<div class="csl-bib-body">
<div class="csl-entry">Csontosová, D., Chaloupka, J., Shinaoka, H., Hariki, A., & Kuneš, J. (2023). Hidden covalent insulator and spin excitations in SrRu₂O₆. <i>Physical Review B</i>, <i>108</i>(19), Article 195137. https://doi.org/10.1103/PhysRevB.108.195137</div>
</div>
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dc.identifier.issn
2469-9950
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dc.identifier.uri
http://hdl.handle.net/20.500.12708/191991
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dc.description.abstract
The density functional plus dynamical mean-field theory is used to study the spin excitation spectra of SrRu₂O₆. A good quantitative agreement with experimental spin excitation spectra is found. Depending on the size of the Hund's coupling JH, the system chooses either the Mott insulator or covalent insulator state when magnetic ordering is not allowed. We find that the nature of the paramagnetic state has a negligible influence on the charge and spin excitation spectra. We find that antiferromagnetic correlations hide the covalent insulator state for realistic choices of the interaction parameters.
en
dc.description.sponsorship
FWF - Österr. Wissenschaftsfonds
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dc.language.iso
en
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dc.publisher
AMER PHYSICAL SOC
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dc.relation.ispartof
Physical Review B
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dc.subject
dynamical mean field theory
en
dc.subject
spin exitation spectra
en
dc.subject
Mott insulator
en
dc.title
Hidden covalent insulator and spin excitations in SrRu₂O₆
