Soft X-ray photoelectron spectroscopy study of Fe2P(0001)

被引:5
|
作者
Sugizaki, Y. [1 ]
Ishida, S. [1 ]
Kakefuda, Y. [1 ,2 ]
Edamoto, K. [1 ,2 ]
Matsunami, M. [3 ]
Hajiri, T. [3 ,4 ]
Kimura, S. [3 ]
机构
[1] Rikkyo Univ, Dept Chem, Toshima Ku, Tokyo 1718501, Japan
[2] Rikkyo Univ, Res Ctr Smart Mol, Toshima Ku, Tokyo 1718501, Japan
[3] Inst Mol Sci, UVSOR Facil, Okazaki, Aichi 4448585, Japan
[4] Nagoya Univ, Grad Sch Engn, Nagoya, Aichi 4648603, Japan
关键词
Photoelectron spectroscopy; Surface electronic phenomena; Phosphides; Low index single crystal surfaces; ELECTRONIC-STRUCTURE; PHOTOEMISSION; SURFACE; NI2P(001); CATALYSTS; STM;
D O I
10.1016/j.susc.2014.01.012
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
The electronic structure of Fe2P(0001) has been investigated by photoelectron spectroscopy (PES) utilizing synchrotron radiation. In the valence band (VB) spectra, an Fe 3d-P 3p hybrid band (main band) was observed at 0-3 eV independent of photon energy, and satellites were observed at 4.5 and 7 eV at hv < 55 eV. The satellites showed a resonant behavior around the Fe 3p threshold, and are associated with the photoemission process leading to two-hole bound final states. The slight Ar+ ion sputtering (1 kV, 5 min) induced little change in VB spectra, while core-level PES study showed that the P atoms in the surface region were selectively removed. This suggests that the stabilization of the metal sites due to the bonding with P atoms is ineffective on Fe2P(0001), unlike the situation reported earlier for Ni2P. (C) 2014 Elsevier B.V. All rights reserved.
引用
收藏
页码:21 / 24
页数:4
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