Suppression of vacancy defects in epitaxial La-doped SrTiO 3 films

D. J. Keeble, B. Jalan, L. Ravelli, W. Egger, G. Kanda, S. Stemmer

Research output: Contribution to journalArticlepeer-review

21 Scopus citations

Abstract

Variable energy positron annihilation lifetime spectroscopy of high-mobility La-doped SrTiO 3 grown by molecular beam epitaxy found that the films contained sufficiently low concentrations of Sr vacancies and vacancy cluster defects to allow the observation of positron annihilation events from the perfect lattice. This enabled the concentrations of charged cation vacancies to be estimated, and these were found to be at least an order of magnitude below the La-dopant concentrations.

Original languageEnglish (US)
Article number232905
JournalApplied Physics Letters
Volume99
Issue number23
DOIs
StatePublished - Dec 5 2011

Fingerprint Dive into the research topics of 'Suppression of vacancy defects in epitaxial La-doped SrTiO 3 films'. Together they form a unique fingerprint.

Cite this