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

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

研究成果: Article査読

38 被引用数 (Scopus)

抄録

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.

本文言語English
論文番号235429
ジャーナルPhysical Review B - Condensed Matter and Materials Physics
81
23
DOI
出版ステータスPublished - 2010 6 21
外部発表はい

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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