Work

Interconversion of intrinsic defects in SrTiO3(001)

Year: 2018

Type: article

Abstract: Photoemission features associated with states deep in the band gap of $n\ensuremath{-}\mathrm{SrTi}{\mathrm{O}}_{3}(001)$ are found to be ubiquitous in bulk crystals and epitaxial films. These features are present even when there is little signal near the Fermi level. Analysis reveals that these states are deep-level traps associated with defects. The commonly investigated defects---O vacancies, Sr vacancies, and aliovalent impurity cations on the Ti sites---cannot account for these features. Rather, ab initio modeling points to these states resulting from interstitial oxygen and its interaction with donor electrons.

Source: Physical review. B./Physical review. B

DOI: 10.1103/physrevb.97.245204

Authors: S. A. Chambers, Y. Du, Z. Zhu, J. Wang, M. J. Wahila, L. F. J. Piper, A. Prakash, J. Yue, B. Jalan, S. R. Spurgeon, D. M. Kepaptsoglou, Q. M. Ramasse, P. V. Sushko

Institutions: Pacific Northwest National Laboratory, Binghamton University, University of Minnesota, Sci-Tech Daresbury, SuperSTEM, University of York, University of Leeds

Language: Latvian

Topic: Electronic and Structural Properties of Oxides

Subfield: Materials Chemistry

Field: Materials Science

Domain: Physical Sciences

Open Access status: green

Funders: National Science Foundation, U.S. Department of Energy, University of Minnesota, Diamond Light Source, Office of Science, Engineering and Physical Sciences Research Council, Division of Materials Research, Biological and Environmental Research, Air Force Office of Scientific Research, Pacific Northwest National Laboratory, Division of Materials Sciences and Engineering

Awards: G1941675983, G2089108170, G3196393315, Disentangling the structural and electronic phase transitions in ultrathin vanadium dioxide, UNIVERSITY OF MINNESOTA CENTER FOR QUANTUM MATERIALS (CQM), G4837814365, G543814473, G7987330999

OpenAlex ID: W2808447649

FWCI: 1.084

Cites: 58

Cited by: 24

Related to: 10