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Far-infrared reflectivity spectra of nanotwinned GaV.sub.4./sub.Se.sub.8./sub.
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SYSNO ASEP 0494656 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Far-infrared reflectivity spectra of nanotwinned GaV4Se8 Author(s) Dočekalová, Zuzana (FZU-D)
Márton, Pavel (FZU-D) RID, ORCID
Ondrejkovič, Petr (FZU-D) RID, ORCID
Hlinka, Jiří (FZU-D) RID, ORCIDNumber of authors 4 Source Title Phase Transitions. - : Taylor & Francis - ISSN 0141-1594
Roč. 91, č. 9-10 (2018), s. 942-952Number of pages 11 s. Language eng - English Country GB - United Kingdom Keywords Lacunar spinel ; dielectric spectrum ; phonons ; domain structures ; effective medium ; ferroelectricity ; reflectivity spectroscopy Subject RIV BM - Solid Matter Physics ; Magnetism OECD category Condensed matter physics (including formerly solid state physics, supercond.) R&D Projects GC17-11494J GA ČR - Czech Science Foundation (CSF) Institutional support FZU-D - RVO:68378271 UT WOS 000446595600004 EID SCOPUS 85053284601 DOI 10.1080/01411594.2018.1510499 Annotation We report dielectric and reflectivity spectra of GaV4Se8 crystal in the phonon frequency region, derived from the ab initio predicted phonon frequencies, eigenvectors and Born-effective charges. Reflectivity spectra of the nanotwinned crystal, calculated using exact expressions for the effective macroscopic dielectric response of a perfect regular twin, are compared with the predicted reflectivity spectra of single-domain crystal. Workplace Institute of Physics Contact Kristina Potocká, potocka@fzu.cz, Tel.: 220 318 579 Year of Publishing 2019
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