About: High tunability of the soft mode in strained SrTiO3/DyScO3 multilayers     Goto   Sponge   NotDistinct   Permalink

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  • SrTiO3/DyScO3 epitaxial multilayers with variable number and thickness (10-100 nm) of bilayers deposited on DyScO3 substrates were investigated by means of time-domain terahertz spectroscopy at room temperature. A tensile strain develops in the SrTiO3 films and shifts the eigenfrequency of the ferroelectric soft mode down by 25-45 cm-1 with respect to the value found in single crystals. In all films the dynamical response up to 3 THz has been described by a damped harmonic oscillator, which strongly hardens upon the electrical bias and which is linearly coupled to a new overdamped excitation at 10 cm-1.
  • SrTiO3/DyScO3 epitaxial multilayers with variable number and thickness (10-100 nm) of bilayers deposited on DyScO3 substrates were investigated by means of time-domain terahertz spectroscopy at room temperature. A tensile strain develops in the SrTiO3 films and shifts the eigenfrequency of the ferroelectric soft mode down by 25-45 cm-1 with respect to the value found in single crystals. In all films the dynamical response up to 3 THz has been described by a damped harmonic oscillator, which strongly hardens upon the electrical bias and which is linearly coupled to a new overdamped excitation at 10 cm-1. (en)
  • Epitaxní multivrstvy SrTiO3/DyScO3 s proměnným počtem dvojvrstev a tloušťkou vrstev (10-100 nm) deponované na substrátech DyScO3 byly studovány při pokojové teplotě pomocí terahertzové spektroskopie v časové oblasti. Vlivem napětí ve vrstvách SrTiO3 dochází ke snížení vlastní frekvence feroelektrického měkkého módu o 25-45 cm-1. oproti její hodnotě v monokrystalu. Celá dynamická odezva ve všech studovaných vrstvách až do 3 THz byla popsána pomocí tlumeného oscilátoru v oboru 3 THz silně tvrdnoucího při přiložení vnějšího elektrického pole a lineárně vázaného s novou přetlumenou excitací u 10 cm-1. (cs)
Title
  • High tunability of the soft mode in strained SrTiO3/DyScO3 multilayers
  • High tunability of the soft mode in strained SrTiO3/DyScO3 multilayers (en)
  • Vysoce laditelný měkký mód v napnutých multivrstvách SrTiO3/DyScO3. (cs)
skos:prefLabel
  • High tunability of the soft mode in strained SrTiO3/DyScO3 multilayers
  • High tunability of the soft mode in strained SrTiO3/DyScO3 multilayers (en)
  • Vysoce laditelný měkký mód v napnutých multivrstvách SrTiO3/DyScO3. (cs)
skos:notation
  • RIV/68378271:_____/09:00324937!RIV09-AV0-68378271
http://linked.open...avai/riv/aktivita
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  • P(IAA100100907), P(LC512), Z(AV0Z10100520)
http://linked.open...iv/cisloPeriodika
  • 11
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  • 317129
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  • RIV/68378271:_____/09:00324937
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  • terahertz; strontium titanate; ferroelectric; strained multilayers; soft mode (en)
http://linked.open.../riv/klicoveSlovo
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  • GB - Spojené království Velké Británie a Severního Irska
http://linked.open...ontrolniKodProRIV
  • [E687DFF0627C]
http://linked.open...i/riv/nazevZdroje
  • Journal of Physics-Condensed Matter
http://linked.open...in/vavai/riv/obor
http://linked.open...ichTvurcuVysledku
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http://linked.open...vavai/riv/projekt
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  • 21
http://linked.open...iv/tvurceVysledku
  • Kužel, Petr
  • Němec, Hynek
  • Kadlec, Christelle
  • Kadlec, Filip
  • Panaitov, G.
  • Schubert, J.
http://linked.open...ain/vavai/riv/wos
  • 000263677300029
http://linked.open...n/vavai/riv/zamer
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  • 0953-8984
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