Optical probe of ferroelectric order in bulk and thin-film perovskite titanates
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14740%2F13%3A00070505" target="_blank" >RIV/00216224:14740/13:00070505 - isvavai.cz</a>
Result on the web
<a href="http://journals.aps.org/prb/abstract/10.1103/PhysRevB.88.104110" target="_blank" >http://journals.aps.org/prb/abstract/10.1103/PhysRevB.88.104110</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1103/PhysRevB.88.104110" target="_blank" >10.1103/PhysRevB.88.104110</a>
Alternative languages
Result language
angličtina
Original language name
Optical probe of ferroelectric order in bulk and thin-film perovskite titanates
Original language description
We have measured the temperature dependence of the direct band gap Eg in SrTiO3 and BaTiO3 and related materials with quantum-paraelectric and ferroelectric properties using optical spectroscopy. We show that Eg exhibits an anomalous temperature dependence with pronounced changes in the vicinity of the ferroelectric transition that can be accounted for in terms of the Frohlich electron-phonon interaction with an optical phonon mode, the so-called soft mode. In addition, we demonstrate that these characteristic changes of Eg can be readily detected even in very thin films of SrTiO3 with a strain-induced ferroelectric order. Optical spectroscopy thus can be used as a rather sensitive probe of ferroelectric order in very thin films of these titanates andprobably also in subsequent multilayers and devices.
Czech name
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Czech description
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Classification
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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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)<br>S - Specificky vyzkum na vysokych skolach
Others
Publication year
2013
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
1098-0121
e-ISSN
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Volume of the periodical
88
Issue of the periodical within the volume
10
Country of publishing house
US - UNITED STATES
Number of pages
7
Pages from-to
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UT code for WoS article
000324943800003
EID of the result in the Scopus database
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