Scanning-tunneling-microscope observation of the homoepitaxial diamond (001) 2×1 reconstruction observed under atmospheric pressure

Hiroshi Kawarada, Hidehiro Sasaki, Atsuhiro Sato

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Abstract

The 2×1/1×2 surface reconstruction of a homoepitaxial diamond (001) surface has been examined using a scanning tunneling microscope at an atomic scale and reflection electron microscopy at a macroscopic scale. The monohydride dimer, which is a unit of the surface reconstruction, has a symmetric structure. These monohydride structures contribute to the surface p-type conduction in undoped films. The surface is composed of elongated dimer rows. Antiphase boundaries have been observed, which is indicative of low-temperature epitaxy where surface migration is limited. Macroscopic surface flatness has been improved during the growth stage in the presence of oxygen and boron which enhance migration.

Original languageEnglish
Pages (from-to)11351-11358
Number of pages8
JournalPhysical Review B
Volume52
Issue number15
DOIs
Publication statusPublished - 1995 Jan 1

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ASJC Scopus subject areas

  • Condensed Matter Physics

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