e-Journal of Surface Science and Nanotechnology
Online ISSN : 1348-0391
ISSN-L : 1348-0391
Regular Papers
Atomic-Orbital Analysis of ZrB2 Valence-Band by Two-Dimensional Photoelectron Spectroscopy
Rie HorieFumihiko MatsuiHiroshi DaimonMasaru TakizawaHidetoshi NambaShigeki OtaniTakashi Aizawa
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2015 Volume 13 Pages 324-328

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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. [DOI: 10.1380/ejssnt.2015.324]

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この記事はクリエイティブ・コモンズ [表示 4.0 国際]ライセンスの下に提供されています。
https://creativecommons.org/licenses/by/4.0/deed.ja
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