@inproceedings{bce5459de1f04223be9ca4370309eb6e,
title = "Lattice dynamical properties of SrTiO3 thin films",
abstract = "We report the experimental studies of the vibrational spectra of SrTiO3 films grown by pulsed laser deposition. Hainan scattering, with and without bias electric field, and Fourier-transform far-infrared ellipsometry between 30 and 700cm-1 have been utilized for investigation of the phonon behavior. These results are discussed in connection with the low-frequency dielectric properties of the SrTiO3 films. In the films, the soft mode reveals hardening compared to that in bulk crystals. This observation is in agreement with the Lyddane-Sachs-Teller formalism. The existence of local polar regions is proposed as an important factor determining the dielectric properties of ferroelectric thin films.",
author = "Sirenko, {A. A.} and Akimov, {I. A.} and C. Bemhard and Clark, {A. M.} and Hao, {J. H.} and Weidong Si and Xi, {X. X.}",
note = "Funding Information: experiments have been carried out in part at the National Synchrotron Light Source (NSLS), Brookhaven National Laboratory, which is supported by DOE, Division of Materials Sciences and Division of Chemical Sciences under contract number DE-AC02-98CH10886. Funding Information: 9702632, by the NRL SPAWAR program, and by the DARPA FAME program, The experiments have been carried out in part at the National Synchrotron Light Source (NSLS), Brookhaven National Laboratory, which is supported by DOE, Division of Materials Sciences and Division of Chemical Sciences under contract number DE-AC02-98CH10886. Funding Information: We thank Hong-Cheng Li, Vladimir I. Merkulov, Jon R. Fox, A. D. Wrest, for their help during the experiment. The helpful discussions with D. Vanderbilt, D. G. Schlom, L. E. Cross, A. S. Bhalla, C. A. Ranclall, S. Trolier-McKinstry, M. Cardona, V. Belitsky, H. Vogt, J. Levy, and C. B. Eom are gratefully acknowledged. The authors are grateful to L. Carr and G. Wrillianis at the beam-line U4IR and U12IR at the NSLS. This work was partially supported by DOE under Grant No. DFFG02- 84ER45095, by NSF under Grant Nos. DMR-9623889, DMR-9623315, and DMR- Publisher Copyright: {\textcopyright} 2000 American Institute of Physics.; Aspen Center for Physics Winter Workshop on Fundamental Physics of Ferroelectrics 2000 ; Conference date: 13-02-2000 Through 20-02-2000",
year = "2000",
month = sep,
day = "12",
doi = "10.1063/1.1324457",
language = "English (US)",
series = "AIP Conference Proceedings",
publisher = "American Institute of Physics Inc.",
pages = "201--217",
editor = "Cohen, {Ronald E.} and Mewaldt, {Richard A.}",
booktitle = "Fundamental Physics of Ferroelectrics 2000",
}