Počet záznamů: 1

Electric field tuning of hard polar phonons in strained SrTiO.sub.3./sub. films

  1. 1.
    0352348 - FZU-D 2011 RIV US eng J - Článek v odborném periodiku
    Skoromets, Volodymyr - Kadlec, Christelle - Kužel, Petr - Kamba, Stanislav - Schubert, J.
    Electric field tuning of hard polar phonons in strained SrTiO3 films.
    Journal of Applied Physics. Roč. 107, č. 12 (2010), 124116/1-124116/4 ISSN 0021-8979
    Grant CEP: GA AV ČR(CZ) IAA100100907; GA ČR(CZ) GA202/09/0682
    Výzkumný záměr: CEZ:AV0Z10100520
    Klíčová slova: phonons * ferroelectricity * SrTiO3
    Kód oboru RIV: BM - Fyzika pevných látek a magnetismus
    Impakt faktor: 2.064, rok: 2010

    We investigate 100 nm thick epitaxial monolayer of SrTiO3 strained by 1% in biaxial tension and grown on (110) DyScO3. Spectra within the whole far-infrared spectral range are obtained as a function of temperature and an electric bias. An appreciable tunability of high frequency polar phonons is observed upon bias. The splitting of TO4 mode clearly observed below 220 K, which is further increased upon bias, is a signature of the ferroelectricity of the film at these temperatures.
    Trvalý link: http://hdl.handle.net/11104/0191873