Changes in spin and lattice dynamics induced by magnetic and structural phase transitions in multiferroic SrMn7O12
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F19%3A00507899" target="_blank" >RIV/68378271:_____/19:00507899 - isvavai.cz</a>
Alternative codes found
RIV/68407700:21340/19:00336216
Result on the web
<a href="https://doi.org/10.1103/physrevb.99.184108" target="_blank" >https://doi.org/10.1103/physrevb.99.184108</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1103/PhysRevB.99.184108" target="_blank" >10.1103/PhysRevB.99.184108</a>
Alternative languages
Result language
angličtina
Original language name
Changes in spin and lattice dynamics induced by magnetic and structural phase transitions in multiferroic SrMn7O12
Original language description
SrMn7O12 undergoes a series of structural and magnetic phase transitions from cubic to rhombohedral symmetry,and to an incommensurately modulated crystal structure, which is connected with charge and orbital ordering of the Mn cations. We report infrared, terahertz, and Raman spectra of SrMn7O12 ceramics reflecting corresponding changes in phonon selection rules.The observed phonon activities are compared with the predictions from the factor-group analysis. The strongest variations occur in THz spectra near the two magnetic phase transitions, at TN1= 87 K and TN2= 63 K. These activate new modes in the spectra, with resonance frequencies and intensities changing with temperature and magnetic field. Below TN2, we observed a transfer of oscillator strengths from low-frequency phonons to these excitations, which we assign to electromagnons.
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
10302 - Condensed matter physics (including formerly solid state physics, supercond.)
Result continuities
Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2019
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
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Volume of the periodical
99
Issue of the periodical within the volume
18
Country of publishing house
US - UNITED STATES
Number of pages
6
Pages from-to
1-6
UT code for WoS article
000469055500003
EID of the result in the Scopus database
2-s2.0-85066408299