Atomic-orbital analysis of ZrB2 valence-band by two-dimensional photoelectron spectroscopy

Rie Horie, Fumihiko Matsui, Hiroshi Daimon, Masaru Takizawa, Hidetoshi Namba, Shigeki Otani, Takashi Aizawa

Research output: Contribution to journalArticle

Abstract

To investigate the electronic state of Zirconium diboride (ZrB2) (0001) clean surface, we measured two-dimensional photoelectron intensity angular distribution (PIAD) patterns with a display-type spherical mirror analyzer (DIANA). As a result, we obtained two-dimensional band dispersion cross section patterns of ZrB2 . In these patterns, we observed the transition-matrix-element effect of linearly-polarized light excitation. Comparing the experimental data to the calculation results, we concluded that the band at the K¯ point at a binding energy of 3.4 eV consists of B 2pz, Zr 4dyz, and Zr 4dzx orbitals. This suggests that this band is the bonding state between the B layer and the Zr layer. We confirmed that this hybrid orbital, where the d electrons of Zr are donated to the pz orbital of B, makes the Dirac-cone-like band of ZrB2.

Original languageEnglish
Pages (from-to)324-328
Number of pages5
Journale-Journal of Surface Science and Nanotechnology
Volume13
DOIs
Publication statusPublished - Jun 20 2015

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Keywords

  • Atomic-orbital analysis
  • Auger electron spectroscopy
  • Low energy electron diffraction (LEED)
  • Synchrotron radiation photoelectron spectroscopy
  • ZrB(0001)

ASJC Scopus subject areas

  • Biotechnology
  • Bioengineering
  • Condensed Matter Physics
  • Mechanics of Materials
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films

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