Structural analysis of an InP(111)A surface using reflection high-energy electron diffraction rocking curves

Yoshimi Horio, Junji Yuhara, Yuji Takakuwa

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1 Citation (Scopus)

Abstract

The surface structure of InP(111)A has been investigated using reflection high-energy electron diffraction (RHEED) rocking curves and first-principles calculations. We used Ar ion sputtering and low-temperature annealing at about 200 °C as a cleaning method, which yields a (1 × 1) surface structure. RHEED rocking curves reveal that the interatomic distance of the top surface bilayer is compressive. First-principles calculations were performed based on a (2 × 2) unit mesh to obtain a stable structure. The calculated results suggest that a surface compressive bilayer is necessary when In atoms are removed from the surface. We conclude that the InP(111)A-(1 × 1) surface structure comprises about 20%-40% In defects, which exist randomly on the surface, and the compressed surface bilayer has an interval of 0.1 Å.

Original languageEnglish
Article numberSIIA14
JournalJapanese journal of applied physics
Volume58
Issue numberSI
DOIs
Publication statusPublished - 2019 Jan 1

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy(all)

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