Surface and defect structure of oxide nanowires on SrTiO 3

Matthew S.J. Marshall*, Andres E. Becerra-Toledo, Laurence D. Marks, Martin R. Castell

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

32 Scopus citations

Abstract

Processing the SrTiO 3(001) surface results in the self-assembly of reduced titanate nanowires whose widths are approximately 1 nm. We have imaged these nanowires and their defects at elevated temperatures by atomic resolution scanning tunneling microscopy. The nanowire structure is modeled with density functional theory, and defects observed in the center of the nanowire are determined to be Ti 4O 3 vacancy clusters. The activation energy for Ti 4O 3 vacancy cluster diffusion is explicitly measured as 4.98±0.17eV with an exponential prefactor of μ=6.57×1029s -1.

Original languageEnglish (US)
Article number086102
JournalPhysical review letters
Volume107
Issue number8
DOIs
StatePublished - Aug 16 2011

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Fingerprint Dive into the research topics of 'Surface and defect structure of oxide nanowires on SrTiO <sub>3</sub>'. Together they form a unique fingerprint.

Cite this