Systematic study of terahertz response of SrTiO3 based heterostructures: Influence of strain, temperature, and electric field
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F14%3A00434411" target="_blank" >RIV/68378271:_____/14:00434411 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1103/PhysRevB.89.214116" target="_blank" >http://dx.doi.org/10.1103/PhysRevB.89.214116</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1103/PhysRevB.89.214116" target="_blank" >10.1103/PhysRevB.89.214116</a>
Alternative languages
Result language
angličtina
Original language name
Systematic study of terahertz response of SrTiO3 based heterostructures: Influence of strain, temperature, and electric field
Original language description
Epitaxial heterostructures consisting of a variable number of SrTiO3/DyScO3 bilayers deposited on DyScO3 substrates were investigated using time-domain terahertz spectroscopy down to helium temperatures. The phase transition into a ferroelectric state isobserved in SrTiO3 films in all samples close to 300 K due to in-plane epitaxial strain induced by the substrate and intercalated layers of DyScO3. Evolution of the dielectric spectra with temperature and external electric field is described by a general model which involves a damped harmonic oscillator (soft mode) coupled to a Debye relaxation (central mode). Both modes are connected with the soft mode eigenvector and they reflect a strong anharmonicity of the soft-mode potential. The observed variation of phase transition temperature and of the dielectric response among the structures is ascribed to a partial epitaxial strain relaxation confirmed also by x-ray diffraction.
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
<a href="/en/project/GA14-25639S" target="_blank" >GA14-25639S: Tuning of terahertz response of dielectric materials and metamaterial structures</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2014
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
89
Issue of the periodical within the volume
21
Country of publishing house
US - UNITED STATES
Number of pages
12
Pages from-to
"214116-1"-"214116-12"
UT code for WoS article
000339048100001
EID of the result in the Scopus database
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