Making EuO multiferroic by epitaxial strain engineering

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F20%3A00537611" target="_blank" >RIV/68378271:_____/20:00537611 - isvavai.cz</a>
Result on the web
<a href="http://hdl.handle.net/11104/0315426" target="_blank" >http://hdl.handle.net/11104/0315426</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1038/s43246-020-00075-1" target="_blank" >10.1038/s43246-020-00075-1</a>

Result language
angličtina
Original language name
Making EuO multiferroic by epitaxial strain engineering
Original language description
We provide clear experimental indications that ferroelectricity can be induced by epitaxial tensile strain in the ferromagnetic simple binary oxide EuO. We investigate the ferroelectric phase transition using infrared reflectance spectroscopy, finding that the frequency of the soft optical phonon reduces with increasing tensile strain and decreasing temperature. We observe such a soft mode anomaly at 100 K in (EuO)2/(BaO)2 superlattices grown epitaxially on (LaAlO3)0.29-(SrAl1/2Ta1/2O3)0.71 substrates, which is a typical signature for a displacive ferroelectric phase transition. The EuO in this superlattice is nominally subjected to 6.4% biaxial tensile strain. We interpret our results with new first-principles density functional calculations using a hybrid functional.n
Czech name
—
Czech description
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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.)

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

Publication year
2020
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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