Symmetry-protected surface state on Mo(1 1 2)

Keisuke Fukutani, Hirokazu Hayashi, Thomas T. Scott, Yorito Nagata, Taiki Horike, Jian Jiang, Hideaki Iwasawa, Kenya Shimada, Yaroslav B. Losovyj, Peter A. Dowben

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)

Abstract

We report the experimental identification of a symmetry-protected surface state on Mo(1 1 2). The utilization of photon-energy- and polarization-dependent angle-resolved photoemission spectroscopy clearly demonstrates that this true surface state preserves its two-dimensional character despite the fact that it resides within the projection of the bulk bands along the ?X line of the surface Brillouin zone. This surface state on Mo(1 1 2) exists due to the forbidden hybridization between the bulk and the surface states, each of which possesses differentstate symmetries within the crystal. The experimental identification of such a surface state possibly opens up pathways towards controlled manipulation between true surface states and the surface resonances (i.e. between two-dimensional and quasi-two-dimensional states) by breaking the symmetry of the crystal surface.

Original languageEnglish
Article number155501
JournalJournal of Physics Condensed Matter
Volume26
Issue number15
DOIs
Publication statusPublished - 2014 Apr 16

Keywords

  • angle-resolved photoemission spectroscopy
  • band hybridization
  • photoemission selection rules
  • surface state

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics

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