About: Temperature and electric field tuning of the ferroelectric soft modein a strained SrTiO3 / DyScO3 heterostructure

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About: Temperature and electric field tuning of the ferroelectric soft modein a strained SrTiO3 / DyScO3 heterostructure Goto Sponge NotDistinct Permalink

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	We studied THz dielectric spectra of SrTiO3/DyScO3 epitaxial multilayers with four 50-nm-thick layers of each compound deposited on DyScO3 substrate as a function of temperature and electric field. At room temperature, SrTiO3 is in the paraelectric phase and the soft-mode frequency is shifted down to 47 cm-1. The ferroelectric phase transition occurs in the strained SrTiO3 layers around 270 K and in the ferroelectric phase the soft-mode hardening upon temperature decrease is observed. The soft mode is linearly coupled to an excitation of relaxation type at 10 cm-1 at all temperatures. This relaxation is silent in the paraelectric phase, but it becomes coupled to the polarization below the ferroelectric transition temperature. The recently proposed universal model of soft-mode behavior in strained SrTiO3 films [C. Kadlec et al., J. Phys.: Condens. Matter 21, 115902 (2009)] was generalized to describe the observed spectra at all temperatures and applied fields. We studied THz dielectric spectra of SrTiO3/DyScO3 epitaxial multilayers with four 50-nm-thick layers of each compound deposited on DyScO3 substrate as a function of temperature and electric field. At room temperature, SrTiO3 is in the paraelectric phase and the soft-mode frequency is shifted down to 47 cm-1. The ferroelectric phase transition occurs in the strained SrTiO3 layers around 270 K and in the ferroelectric phase the soft-mode hardening upon temperature decrease is observed. The soft mode is linearly coupled to an excitation of relaxation type at 10 cm-1 at all temperatures. This relaxation is silent in the paraelectric phase, but it becomes coupled to the polarization below the ferroelectric transition temperature. The recently proposed universal model of soft-mode behavior in strained SrTiO3 films [C. Kadlec et al., J. Phys.: Condens. Matter 21, 115902 (2009)] was generalized to describe the observed spectra at all temperatures and applied fields. (en)
Title	Temperature and electric field tuning of the ferroelectric soft modein a strained SrTiO3 / DyScO3 heterostructure Temperature and electric field tuning of the ferroelectric soft modein a strained SrTiO3 / DyScO3 heterostructure (en)
skos:prefLabel	Temperature and electric field tuning of the ferroelectric soft modein a strained SrTiO3 / DyScO3 heterostructure Temperature and electric field tuning of the ferroelectric soft modein a strained SrTiO3 / DyScO3 heterostructure (en)
skos:notation	RIV/68378271:_____/09:00343463!RIV11-MSM-68378271
http://linked.open...avai/riv/aktivita	P Z
http://linked.open...avai/riv/aktivity	P(IAA100100907), P(LC512), Z(AV0Z10100520)
http://linked.open...iv/cisloPeriodika	17
http://linked.open...vai/riv/dodaniDat	2011
http://linked.open...aciTvurceVysledku	Hlinka, Jiří Kužel, Petr Němec, Hynek Kadlec, Filip Kadlec, Christelle Skoromets, Volodymyr
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Fyzikální ústav AV ČR, v. v. i.
http://linked.open...dnocenehoVysledku	345704
http://linked.open...ai/riv/idVysledku	RIV/68378271:_____/09:00343463
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	strontium titanate; terahertz; strained films; ferroelectrics (en)
http://linked.open.../riv/klicoveSlovo	strontium titanate terahertz ferroelectrics strained films
http://linked.open...odStatuVydavatele	US - Spojené státy americké
http://linked.open...ontrolniKodProRIV	[C7FF45422748]
http://linked.open...i/riv/nazevZdroje	Physical Review. B
http://linked.open...in/vavai/riv/obor	BM
http://linked.open...ichTvurcuVysledku	6 (xsd:int)
http://linked.open...cetTvurcuVysledku	8 (xsd:int)
http://linked.open...vavai/riv/projekt	Actively tunable structures and metamaterials for the terahertz range Center for biomolecules and complex molecular systems
http://linked.open...UplatneniVysledku	2009
http://linked.open...v/svazekPeriodika	80
http://linked.open...iv/tvurceVysledku	Hlinka, Jiří Kužel, Petr Němec, Hynek Skoromets, Volodymyr Kadlec, Christelle Kadlec, Filip Panaitov, G. Schubert, J.
http://linked.open...ain/vavai/riv/wos	000272310400034
http://linked.open...n/vavai/riv/zamer	Specific effects in condensed systems with reduced dimension and broken symmetry
issn	1098-0121
number of pages	6 (xsd:int)
is http://linked.open...avai/riv/vysledek of	Temperature and electric field tuning of the ferroelectric soft modein a strained SrTiO3 / DyScO3 heterostructure Temperature and electric field tuning of the ferroelectric soft modein a strained SrTiO3 / DyScO3 heterostructure Temperature and electric field tuning of the ferroelectric soft modein a strained SrTiO3 / DyScO3 heterostructure

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