SrTiO3 termination control: a method to tailor the oxygen exchange kinetics

Felix V.E. Hensling*, Christoph Baeumer, Marc André Rose, Felix Gunkel, Regina Dittmann

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

9 Citations (Scopus)

Abstract

We provide insights into the influence of surface termination on the oxygen vacancy incorporation for the perovskite model material SrTiO3 during annealing in reducing gas environments. We present a novel approach to tailor the oxygen vacancy formation by controlling the termination. We prove that a SrO-termination can inhibit the incorporation of oxygen vacancies across the (100)-surface and apply this to control their incorporation during thin film growth. Utilizing the conducting interface between LaAlO3 and SrTiO3, we could tailor the oxygen-vacancy based conductivity contribution by the level of SrO termination at the interface.

Original languageEnglish
Pages (from-to)31-40
Number of pages10
JournalMaterials Research Letters
Volume8
Issue number1
DOIs
Publication statusPublished - 2 Jan 2020
Externally publishedYes

Keywords

  • 2DEGs
  • defect chemistry
  • oxide interfaces
  • substrate termination
  • Surface kinetics

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