Tunable dielectric properties of KTaO3 single crystals in the terahertz range

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F16%3A00459013" target="_blank" >RIV/68378271:_____/16:00459013 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1088/0022-3727/49/6/065306" target="_blank" >http://dx.doi.org/10.1088/0022-3727/49/6/065306</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1088/0022-3727/49/6/065306" target="_blank" >10.1088/0022-3727/49/6/065306</a>

Result language
angličtina
Original language name
Tunable dielectric properties of KTaO3 single crystals in the terahertz range
Original language description
Electric-field tunability of the dielectric properties of potassium tantalate single crystal was studied by terahertz spectroscopy in a broad temperature range (40–250 K). Complex valued terahertz transmission spectra of samples were measured with an external electric field perpendicular to the sample surface and parallel to the terahertz wave-vector. We found that the ferroelectric soft mode hardening is fully responsible for the observed electric field-induced changes in the spectra and no signature of a central mode was detected. We determined the anharmonic properties of the soft-mode potential in the mean field approximation. The observed behavior was compared with that previously reported for SrTiO3 single crystals.
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
<a href="/en/project/GA14-25639S" target="_blank" >GA14-25639S: Tuning of terahertz response of dielectric materials and metamaterial structures</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

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

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