Valence Electronic Structure of β-FeSi2 Single Crystal Investigated by Photoelectron Spectroscopy Using Synchrotron Radiation

被引：1

作者：

Ogawa, K. ^{[1
]}

Sasaki, M. ^{[2
]}

Ohnishi, A. ^{[2
]}

Kitaura, M. ^{[2
]}

Fujimoto, H. ^{[3
]}

Azuma, J. ^{[1
]}

Takahashi, K. ^{[1
]}

Kamada, M. ^{[1
]}

机构：

[1] Saga Univ, Synchrotron Light Applicat Ctr, 1 Honjo, Saga 8408502, Japan

[2] Yamagata Univ, Dept Phys, Yamagata 9908560, Japan

[3] Kumamoto Univ, Fac Sci, Kumamoto 8608555, Japan

来源：

ASIA-PACIFIC CONFERENCE ON SEMICONDUCTING SILICIDES SCIENCE AND TECHNOLOGY TOWARDS SUSTAINABLE OPTOELECTRONICS (APAC-SILICIDE 2010) | 2011年 / 11卷

关键词：

beta-FeSi2; single crystal; photoelectron spectroscopy; synchrotron radiation; resonant photoemission; PHOTOEMISSION; ABSORPTION; SILICIDES;

D O I：

10.1016/j.phpro.2011.01.033

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Valence electronic structure of beta-FeSi2 single crystal has been investigated by photoelectron spectroscopy using synchrotron radiation. The plate-type beta-FeSi2 single crystal has been grown by chemical vapor transport method. The surface contamination and oxide layer were removed by Ne+ ion sputtering. The dependence of the valence band spectra on exciting photon energy shows that the strong peak at the binging energy (E-Bin) of 0.5 eV and the shoulder peak at E-Bin = 8 eV are assigned to be Fe3d and Si3p orbitals, respectively. Upon the excitation of Fe2p(3/2), resonant enhancement of the valence band was observed at E-Bin = 3.7 eV, which is very similar to Fe metal. This fact suggests the existence of the two-hole satellite states from Fe3d orbitals. (C) 2010 Published by Elsevier B.V.

引用

页码：63 / 66

页数：4

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