Enhanced atomic-scale contrast on Fe3O4 (100) observed with an Fe STM tip

R. Koltun, M. Herrmann, G. Güntherodt, V. A.M. Brabers

Research output: Contribution to journalArticle

33 Scopus citations

Abstract

Clean (100) surfaces of a synthetic single crystal of magnetite (Fe3O4) have been prepared in situ using current pulses in a scanning tunneling microscope without subsequent annealing. We have observed atomically resolved terraces with rows of Fe2+ and Fe3+ ions of the B-sublattice (octahedrally coordinated lattice sites). Along these rows a long-distance corrugation (∼ 12 Å) has been observed at 300 K using in situ prepared Fe tunneling tips. This corrugation is interpreted as a Wigner localization associated with a Verwey transition above 300 K in the top surface layer.

Original languageEnglish (US)
Pages (from-to)49-53
Number of pages5
JournalApplied Physics A: Materials Science and Processing
Volume73
Issue number1
DOIs
StatePublished - Jan 1 2001
Externally publishedYes

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Science(all)

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