Direct measurements of optical phonons in SrTiO3 nanosystems

Publication Type
Journal Article
Authors
DOI
10.1016/S1386-9477(03)00305-9
Abstract
We use terahertz time domain spectroscopy to examine finite size effects on the optical phonon modes in SrTiO3 thin films. In temperature-dependent measurements we find a near absence of mode softening in the TO1 phonon frequency. Furthermore we see an increase in the soft mode frequency with reduced thickness. Both of these results correlate well with the reduced dielectric response observed for nanoscale ferroelectric systems. © 2003 Elsevier B.V. All rights reserved.
Notes
cited By 3
Journal
Physica E: Low-Dimensional Systems and Nanostructures
Volume
19
Year of Publication
2003
Number
1-2
Pagination
236-239
Publisher
Elsevier
ISSN Number
13869477
Keywords
Research Areas
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