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Oxidized In-containing III-V(100) surfaces: Formation of crystalline oxide films and semiconductor-oxide interfaces

Author

  • M. P. J. Punkkinen
  • P. Laukkanen
  • J. Lang
  • M. Kuzmin
  • M. Tuominen
  • V. Tuominen
  • J. Dahl
  • M. Pessa
  • M. Guina
  • K. Kokko
  • Janusz Sadowski
  • B. Johansson
  • I. J. Vayrynen
  • L. Vitos

Summary, in English

Previously found oxidized III-V semiconductor surfaces have been generally structurally disordered and useless for applications. We disclose a family of well-ordered oxidized InAs, InGaAs, InP, and InSb surfaces found by experiments. The found epitaxial oxide-III-V interface is insulating and free of defects related to the harmful Fermi-level pinning, which opens up new possibilities to develop long-sought III-V metal-oxide-semiconductor transistors. Calculations reveal that the early stages in the oxidation process include only O-III bonds due to the geometry of the III-V(100)c(8 x 2) substrate, which is responsible for the formation of the ordered interface. The found surfaces provide a different platform to study the oxidation and properties of oxides, e. g., the origins of the photoemission shifts and electronic structures, using surface science methods.

Department/s

Publishing year

2011

Language

English

Publication/Series

Physical Review B (Condensed Matter and Materials Physics)

Volume

83

Issue

19

Document type

Journal article

Publisher

American Physical Society

Topic

  • Physical Sciences
  • Natural Sciences

Status

Published

ISBN/ISSN/Other

  • ISSN: 1098-0121