Field-induced exciton condensation in LaCoO3

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F16%3A00465252" target="_blank" >RIV/68378271:_____/16:00465252 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1038/srep30510" target="_blank" >http://dx.doi.org/10.1038/srep30510</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1038/srep30510" target="_blank" >10.1038/srep30510</a>

Result language
angličtina
Original language name
Field-induced exciton condensation in LaCoO3
Original language description
Motivated by recent observation of magnetic field induced transition in LaCoO 3 we study the effect of external field in systems close to instabilities towards spin-state ordering and exciton condensation. We show that, while in both cases the transition can be induced by an external field, temperature dependencies of the critical field have opposite slopes. Based on this result we argue that the experimental observations select the exciton condensation scenario. We show that such condensation is possible due to high mobility of the intermediate spin excitations. The estimated width of the corresponding dispersion is large enough to overrule the order of atomic multiplets and to make the intermediate spin excitation propagating with a specific wave vector the lowest excitation of the system.
Czech name
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Czech description
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Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
BM - Solid-state physics and magnetism
OECD FORD branch
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Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2016
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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