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ID 19344
本文ファイル
著者
Higashiguchi, Mitsuharu
Nishiura, Keisuke
Cui, Xiaoyu
キーワード
nickel
ferromagnetic materials
quasiparticles
photoelectron spectra
band structure
electron-phonon interactions
electron correlations
Fermi level
effective mass
抄録(英)
High-resolution angle-resolved photoelectron spectroscopy of ferromagnetic Ni(110) has been conducted to elucidate energy band and spin-dependent many-body interactions. A kink structure has been clearly observed in the energy band dispersions of the minority spin Σ2↓ and Σ1↓, while it is absent in the majority spin Σ1↑ band. Analyses of the self-energy indicate that the kink originates from the electron-phonon interaction. Based on a detailed study of the effective mass enhancement, we find that the electron-phonon interaction and electron correlation contribute to the spectral features near the Fermi level in different ways, depending on the identity of the energy band and the spin direction. These results provide insight into the interplay of these many-body interactions on quasiparticles near the Fermi level.
掲載誌名
Physical Review B - Condensed Matter and Materials Physics
72巻
開始ページ
214438-1
終了ページ
214438-5
出版年月日
2005-12-03
出版者
American Physical Society
ISSN
0163-1829
NCID
出版者DOI
言語
英語
NII資源タイプ
学術雑誌論文
広大資料タイプ
学術雑誌論文
DCMIタイプ
text
フォーマット
application/pdf
著者版フラグ
publisher
権利情報
Copyright (c) 2005 The American Physical Society.
関連情報URL
部局名
理学研究科
放射光科学研究センター