Interconversion of intrinsic defects in SrTiO3(001)

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

doi:10.1103/PhysRevB.97.245204

Interconversion of intrinsic defects in $SrTi O_{3} (001)$

Journal Article · 01 June 2018 · Physical Review B

DOI:https://doi.org/10.1103/PhysRevB.97.245204· OSTI ID:1455258

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

Photoemission deep in the SrTiO₃(001) band gap is found to be ubiquitous in bulk crystals and epitaxial films for all doping levels. Such features are present even when there is little signal near the Fermi level. This result challenges earlier conclusions about deep features being derived from the metallic band associated with free carriers. Rather, our data point to these states resulting from interstitial oxygen and its interaction with donor electrons.

Research Organization:: Pacific Northwest National Laboratory (PNNL), Richland, WA (United States). Environmental Molecular Sciences Laboratory (EMSL)

Sponsoring Organization:: USDOE

DOE Contract Number:: AC05-76RL01830

OSTI ID:: 1455258

Report Number(s):: PNNL-SA-131613; PRBMDO; 49306; KC0203020

Journal Information:: Physical Review B, Vol. 97, Issue 24; ISSN 2469-9950

Publisher:: American Physical Society (APS)

Country of Publication:: United States

Language:: English

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