Far-infrared reflectivity spectra of nanotwinned GaV4Se8

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F46747885%3A24220%2F18%3A00005571" target="_blank" >RIV/46747885:24220/18:00005571 - isvavai.cz</a>

Alternative codes found

RIV/68378271:_____/18:00494656

Result on the web

<a href="https://www.tandfonline.com/doi/full/10.1080/01411594.2018.1510499" target="_blank" >https://www.tandfonline.com/doi/full/10.1080/01411594.2018.1510499</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1080/01411594.2018.1510499" target="_blank" >10.1080/01411594.2018.1510499</a>

Result language

angličtina

Original language name

Far-infrared reflectivity spectra of nanotwinned GaV4Se8

Original language description

GaV4Se8 is one of the lacunar spinel materials able to host magnetic skyrmionic textures. Earlier investigations at temperatures below its Jahn–Teller ferroelectric phase transition disclosed a nanoscale ferroelectric domain separated by 109∘ domain walls. Here, we have investigated the impact of this nanoscale twinning on polar phonon modes. 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. A characteristic spectral feature caused by the nanoscale twinning has been identified. While this feature is not a well-defined geometric resonance, it may still be accessible in experiments.

Czech name

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Czech description

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Type

J_imp - 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.)

Project

<a href="/en/project/GC17-11494J" target="_blank" >GC17-11494J: Multiferroicity in skyrminonic materials</a><br>

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2018

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Phase Transitions

ISSN

0141-1594

e-ISSN

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Volume of the periodical

91

Issue of the periodical within the volume

9-10

Country of publishing house

GB - UNITED KINGDOM

Number of pages

11

Pages from-to

942-952

UT code for WoS article

000446595600004

EID of the result in the Scopus database

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