Dimer structure of the Si(0 0 1)2 × 1 surface observed by low-temperature scanning tunneling microscope

Masanori Ono, A. Kamoshida, N. Matsuura, T. Eguchi, Y. Hasegawa

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

Using a scanning tunneling microscope (STM) which can be operated in ultrahigh vacuum (UHV), low temperature (> 2.8 K), and magnetic field (< 11 T), we studied dimer structure on the Si(0 0 1)2 × 1 surface. Asymmetric (buckled) dimer structure was observed with positive sample voltages, while most of the dimers look symmetric with negative voltages. These observations suggest that the observed symmetric dimer in the filled state images is not intrinsic; neither static symmetric dimer nor flip-flopped asymmetric dimer, but a matter of STM imaging mechanism. Magnetic filed, up to 10 T, applied perpendicularly to the surface does not affect the STM imaging at 10 K.

Original languageEnglish
Pages (from-to)1644-1646
Number of pages3
JournalPhysica B: Condensed Matter
Volume329-333
Issue numberII
DOIs
Publication statusPublished - 2003 May
Externally publishedYes

Keywords

  • Scanning tunneling microscopy
  • Si(0 0 1)2 × 1
  • Silicon dimer structure
  • Silicon surface

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

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