Photoemission spectroscopy of Sm4As3 using soft and hard X-rays

Atsushi Yamasaki, Akira Sekiyama, Shin Imada, Masanori Tsunekawa, Claudia Dallera, Lucio Braicovich, Tien Lin Lee, Akira Ochiai, Shigemasa Suga

研究成果: Article査読

16 被引用数 (Scopus)

抄録

The bulk and surface electronic structures of Sm4As3 have been investigated by hard and soft X-ray photoemission spectroscopies (PESs). PES with a wide range of photon energies (hv's) between 220 and 2450 eV demonstrates the absence of valence mixing in both high- and low-temperature phases, that is, the valence of Sm ions is definitely trivalent in the bulk and divalent on the surface. Atomic multiplet calculations taking into account the bulk and surface spectral weights at each hv well reproduce the experimental valence band PES and Sm 3d core-level spectra, supporting the valence difference between bulk and surface in Sm4As3.

本文言語English
ページ(範囲)2538-2543
ページ数6
ジャーナルjournal of the physical society of japan
74
9
DOI
出版ステータスPublished - 2005 9月 1

ASJC Scopus subject areas

  • 物理学および天文学(全般)

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