Charge transport in epitaxial barium titanate films
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F20%3A00539019" target="_blank" >RIV/68378271:_____/20:00539019 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.1103/PhysRevB.101.094106" target="_blank" >https://doi.org/10.1103/PhysRevB.101.094106</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1103/PhysRevB.101.094106" target="_blank" >10.1103/PhysRevB.101.094106</a>
Alternative languages
Result language
angličtina
Original language name
Charge transport in epitaxial barium titanate films
Original language description
The electrical conductivity of epitaxial BaTiO3 films was studied by small-signal impedance spectroscopy at temperatures of 10–720 K using Pt-BaTiO3-SrRuO3 capacitors. The ∼150-nm-thick BaTiO3 films possessed different lattice strains and degrees of oxygen deficiency. A crossover between the low-temperature hopping of small polarons and the high-temperature semiconductor- to metal-type behavior was demonstrated in all films. It was suggested that the small electron polarons originate from self-trapping at Ti in the stoichiometric tensilestrained film and from trapping at Ti next to the oxygen vacancy in the oxygen-deficient films. The conductionband transport was ascribed to the thermally activated release of the trapped electrons. It was pointed out that the electronic release can mimic the motion of oxygen vacancies, which are actually immobile.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - 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.)
Result continuities
Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2020
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
2469-9950
e-ISSN
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Volume of the periodical
101
Issue of the periodical within the volume
9
Country of publishing house
US - UNITED STATES
Number of pages
8
Pages from-to
1-8
UT code for WoS article
000521073100001
EID of the result in the Scopus database
2-s2.0-85083241141