Emergence of undulating surface band upon oxygen adsorption of Fe thin film on W(110)

Seigo Souma, Kohei Honma, Takafumi Sato, Masahito Tsujikawa, Masafumi Shirai, Takashi Takahashi

Research output: Contribution to journalArticlepeer-review

Abstract

We have performed high-resolution angle-resolved photoemission spectroscopy of oxygen-adsorbed Fe thin films on W(110) to elucidate the evolution of electronic states upon surface oxidation. After oxygen adsorption of 0.25 monolayer onto Fe films, we found a surface state in the vicinity of the Fermi level which exhibits an undulating energy band dispersion. Our first-principles band-structure calculation indicates that this state is attributed to the spin-polarized minority band arising from the hybridization between Fe 3d and O 2p orbitals. The present result suggests that the observed surface state is related to the unusual magnetic properties of oxidized Fe surfaces.

Original languageEnglish
Article number241603
JournalApplied Physics Letters
Volume111
Issue number24
DOIs
Publication statusPublished - 2017 Dec 11

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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