Optical properties of highly reduced SrTiO3-x

Authors
Crandles, DA Nicholas, B Dreher, C Homes, CC McConnell, AW Clayman, BP Gong, WH Greedan, JE
Citation
Da. Crandles et al., Optical properties of highly reduced SrTiO3-x, PHYS REV B, 59(20), 1999, pp. 12842-12846
Citations number
23
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
PHYSICAL REVIEW B-CONDENSED MATTER
ISSN journal
01631829 → ACNP
Volume
59
Issue
20
Year of publication
1999
Pages
12842 - 12846
Database
ISI
SICI code
0163-1829(19990515)59:20<12842:OPOHRS>2.0.ZU;2-K
Abstract
The reflectance of highly reduced SrTiO3-x has been studied in samples wher e the carrier concentration-or oxygen-vacancy density - varies from about 1 0(18) to 10(21) cm(-3). Several phonon modes are strongly influenced by oxy gen-vacancy density. Oxygen reduction induces a mid-infrared band whose osc illator strength scales with carrier density. In highly reduced samples, a weakly localized plasmon mode develops. [S0163-1829(99)10919-6].