Acoustic properties of nanoscale oxide heterostructures probed by UV Raman spectroscopy

6533b82bfe1ef96bd128e033

RESEARCH PRODUCT

Acoustic properties of nanoscale oxide heterostructures probed by UV Raman spectroscopy

Darrell G. Schlom Norberto D. Lanzillotti-kimura Alejandro Fainstein D. A. Tenne Andrés Cantarero Axel Bruchhausen Arsen Soukiassian X. X. Xi

subject

History Materials science Phonon business.industry Superlattice Heterojunction medicine.disease_cause Epitaxy Computer Science Applications Education Condensed Matter::Materials Science symbols.namesake Condensed Matter::Superconductivity Dispersion (optics)medicine symbols Optoelectronics Coherent anti-Stokes Raman spectroscopy business Raman spectroscopy Ultraviolet

description

We study high quality molecular-beam epitaxy grown BaTiO3/SrTiO3 superlat-tices using ultraviolet Raman spectroscopy. In the low energy spectral region, acoustic phonon doublets are observed. These are due to the artificial superlattice periodicity and consequent folding of the acoustic phonon dispersion. From the study of samples with different BaTiO3/SrTiO3 layer thicknesses the effective sound velocities within each of the layers are obtained.

year	journal	country	edition	language
2007-12-01	Journal of Physics: Conference Series

https://doi.org/10.1088/1742-6596/92/1/012160

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