Scanning tunneling microscopy observation of epitaxial bcc-Fe(001) surface

Agus Subagyo, Hirofumi Oka, Guido Eilers, Kazuhisa Sueoka, Koichi Mukasa

Research output: Contribution to journalArticle

19 Citations (Scopus)

Abstract

We report the first atomic-resolution scanning tunneling microscopy (STM) image of epitaxial bcc-Fe(001) films grown on MgO(001) substrates. A 50-Å-thick Fe film grown at a growth temperature of 550 K formed square pyramidal islands with atomically flat terraces. The terraces were found to range between 5 nm and 20 nm in width separated by monoatomic high steps. The film exhibited a (1 × 1) unreconstructed structure at a film thickness below 19 Å; however, a reconstructed surface was found on thicker films. The atomic-resolution STM image and low energy electron diffraction (LEED) observation indicated that the reconstructed structure is a c(2 × 2) structure.

Original languageEnglish
Pages (from-to)3777-3779
Number of pages3
JournalJapanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers
Volume39
Issue number6 B
DOIs
Publication statusPublished - 2000
Externally publishedYes

Keywords

  • C(2 × 2)
  • Epitaxial growth
  • MgO(001)
  • Scanning tunneling microscopy
  • Surface reconstruction
  • bcc-Fe(001)

ASJC Scopus subject areas

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

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