Termination and Verwey transition of the (111) surface of magnetite studied by scanning tunneling microscopy and first-principles calculations

Tomoko Shimizu, Jaehoon Jung, Hiroyuki S. Kato, Yousoo Kim, Maki Kawai

Research output: Contribution to journalArticle

34 Citations (Scopus)

Abstract

Scanning tunneling microscopy and scanning tunneling spectroscopy combined with first-principles calculations have been applied to investigate the (111) surface of a naturally grown Fe3 O4 single crystal. The commonly observed surface is determined as a layer of Fe cations at tetrahedral sites, known as the Fetet1 termination. A surface terminated with Fe cations at octahedral sites, another proposed termination in previous studies, is found only when the surface was prepared under oxygen-poor conditions. Scanning tunneling spectra at room temperature and at 77 K indicate that the (111) surface undergoes a metal-insulator transition.

Original languageEnglish
Article number235429
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume81
Issue number23
DOIs
Publication statusPublished - 2010 Jun 21
Externally publishedYes

Fingerprint

Ferrosoferric Oxide
Scanning tunneling microscopy
Magnetite
magnetite
scanning tunneling microscopy
Cations
Positive ions
Scanning
cations
Metal insulator transition
scanning
insulators
Single crystals
Spectroscopy
Oxygen
single crystals
room temperature
oxygen
metals
spectroscopy

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Electronic, Optical and Magnetic Materials

Cite this

Termination and Verwey transition of the (111) surface of magnetite studied by scanning tunneling microscopy and first-principles calculations. / Shimizu, Tomoko; Jung, Jaehoon; Kato, Hiroyuki S.; Kim, Yousoo; Kawai, Maki.

In: Physical Review B - Condensed Matter and Materials Physics, Vol. 81, No. 23, 235429, 21.06.2010.

Research output: Contribution to journalArticle

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