Electric field tuning of hard polar phonons in strained SrTiO3 films

Skoromets, V.; Kamba, S.; Schubert, J.; Kuzel, K.; Kadlec, C.

doi:10.1063/1.3447812

Journal Article

PreJuSER-10420

Electric field tuning of hard polar phonons in strained SrTiO3 films

Skoromets, V. ; Kadlec, C. ; Kuzel, K. ; Kamba, S. ; Schubert, J.FZJ*

2010
American Institute of Physics Melville, NY

Journal of applied physics 107, 124116 (2010) [10.1063/1.3447812]

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Please use a persistent id in citations: http://hdl.handle.net/2128/17181 doi:10.1063/1.3447812

Abstract: 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. (c) 2010 American Institute of Physics. [doi: 10.1063/1.3447812]

Keyword(s): J

Classification:

Physics, Applied

Note: This work was supported by the Academy of Sciences of the Czech Republic (Project No. AVOZ10100520), by its Grant Agency (Project No. A100100907), and by the Czech Science Foundation (Project No. 202/09/0682).

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