Spin orbital lattice entanglement in the ideal j=1/2 compound K2IrCl6
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11310%2F24%3A10489281" target="_blank" >RIV/00216208:11310/24:10489281 - isvavai.cz</a>
Result on the web
<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=n33qz.Z-9t" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=n33qz.Z-9t</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1103/PhysRevB.110.195120" target="_blank" >10.1103/PhysRevB.110.195120</a>
Alternative languages
Result language
angličtina
Original language name
Spin orbital lattice entanglement in the ideal j=1/2 compound K2IrCl6
Original language description
Mott insulators with spin-orbit entangled j = 1/2 moments host intriguing magnetic properties. The j = 1/2 wave function requires cubic symmetry, while a noncubic crystal field mixes j = 1/2 and 3/2 character. Spectroscopic studies of 5d5 iridates typically claim noncubic symmetry, e.g., based on a splitting of the excited j = 3/2 quartet. A sizable splitting is particularly puzzling in antifluorite-type K2IrCl6, a frustrated fcc quantum magnet with global cubic symmetry. It raises the fundamental question about the stability of j = 1/2 moments against magnetoelastic coupling. Combining resonant inelastic x-ray scattering with optical spectroscopy, we demonstrate that the multi-peak line shape in K2IrCl6 reflects a vibronic character of the j = 3/2 states rather than a noncubic crystal field. The quasimolecular crystal structure with well separated IrCl6 octahedra explains the existence of well-defined sidebands that are usually smeared out in solids. Our results highlight the spin orbital lattice entangled character of cubic K2IrCl6 with ideal j = 1/2 moments.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10402 - Inorganic and nuclear chemistry
Result continuities
Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2024
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Physical Review B
ISSN
2469-9950
e-ISSN
2469-9969
Volume of the periodical
110
Issue of the periodical within the volume
19
Country of publishing house
US - UNITED STATES
Number of pages
16
Pages from-to
195120
UT code for WoS article
001355878400003
EID of the result in the Scopus database
2-s2.0-85210923976