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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Transition Elements
Photoelectron Spectroscopy
Photoelectron spectroscopy
Valence bands
photoelectron spectroscopy
Electrons
valence
Light
orbitals
Angular distribution
Electronic states
Light polarization
Photoelectrons
Binding energy
Zirconium
Cones
Mirrors
Display devices
polarized light
analyzers

Keywords

  • Atomic-orbital analysis
  • Auger electron spectroscopy
  • Low energy electron diffraction (LEED)
  • Synchrotron radiation photoelectron spectroscopy
  • ZrB<inf>2</inf>(0001)

ASJC Scopus subject areas

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

Cite this

Atomic-orbital analysis of ZrB2 valence-band by two-dimensional photoelectron spectroscopy. / Horie, Rie; Matsui, Fumihiko; Daimon, Hiroshi; Takizawa, Masaru; Namba, Hidetoshi; Otani, Shigeki; Aizawa, Takashi.

In: e-Journal of Surface Science and Nanotechnology, Vol. 13, 20.06.2015, p. 324-328.

Research output: Contribution to journalArticle

Horie, Rie ; Matsui, Fumihiko ; Daimon, Hiroshi ; Takizawa, Masaru ; Namba, Hidetoshi ; Otani, Shigeki ; Aizawa, Takashi. / Atomic-orbital analysis of ZrB2 valence-band by two-dimensional photoelectron spectroscopy. In: e-Journal of Surface Science and Nanotechnology. 2015 ; Vol. 13. pp. 324-328.
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AU - Namba, Hidetoshi

AU - Otani, Shigeki

AU - Aizawa, Takashi

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