Strong spin-phonon coupling in infrared and Raman spectra of SrMnO3.

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F14%3A00431294" target="_blank" >RIV/68378271:_____/14:00431294 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1103/PhysRevB.89.064308" target="_blank" >http://dx.doi.org/10.1103/PhysRevB.89.064308</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1103/PhysRevB.89.064308" target="_blank" >10.1103/PhysRevB.89.064308</a>

Result language
angličtina
Original language name
Strong spin-phonon coupling in infrared and Raman spectra of SrMnO3.
Original language description
IR reflectivity spectra of SrMnO3 ceramics reveal 18% stiffening of the lowest-frequency phonon below the antiferromagnetic phase transition occuring at T_N = 233 K. Such a large temperature change of the polar phonon frequency is extraordinary and we attribute it to an exceptionally strong spin-phonon coupling in this material. This is consistent with our prediction from first-principles calculations. Moreover, polar phonons become Raman active below T_N, although their activition is forbidden by symmetry in the Pm3m space group.
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
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2014
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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