Broad Doublet and Plasmon Peak in Perovskite-Type Oxides

The 180° light scattering experiment has been performed in a Nb-doped SrTi 16 O 3 sample. The spectral intensity of a broad doublet (BD) is found to be very weak, supporting the reported hypothesis that a partially softened transverse acoustic mode is the physical origin of the BD. In addition to th...

Full description

Saved in:
Bibliographic Details
Published in:Ferroelectrics 2008-01, Vol.367 (1), p.95-101
Main Authors: Tsujimi, Yuhji, Uwe, Hiromoto, Minami, Hidetoshi
Format: Article
Language:English
Subjects:
broad doublet
Collective effects
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Dielectric, piezoelectric, ferroelectric and antiferroelectric materials
Dielectrics, piezoelectrics, and ferroelectrics and their properties
Electron states
Exact sciences and technology
Exchange, correlation, dielectric and magnetic functions, plasmons
light scattering
Nb-doped SrTiO
Niobates, titanates, tantalates, pzt ceramics, etc
Physics
plasmon
quantum paraelectrics
Citations: Items that this one cites
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The 180° light scattering experiment has been performed in a Nb-doped SrTi 16 O 3 sample. The spectral intensity of a broad doublet (BD) is found to be very weak, supporting the reported hypothesis that a partially softened transverse acoustic mode is the physical origin of the BD. In addition to the BD of weak intensity, two spectral peaks, which do not exist in pure SrTi 16 O 3 , are found and assigned to "plasmon-LO phonon coupled modes". The similar behavior between the BD and the coupled modes is discussed.
ISSN:0015-0193
1563-5112
DOI:10.1080/00150190802371549