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英文:Self-Energy on the Low- to High-Energy Electronic Structure of Correlated Metal SrVO3 
著者
和文: 相崎 真一, 吉田 鉄平, 吉松 公平, 滝沢 優, 簑原 誠, 出田 真一郎, 藤森 淳, K. Gupta, P. Mahadevan, 堀場 弘司, 組頭 広志, 尾嶋 正治.  
英文: S. Aizaki, T. Yoshida, K. Yoshimatsu, M. Takizawa, M. Minohara, S. Ideta, A. Fujimori, K. Gupta, P. Mahadevan, K. Horiba, H. Kumigashira, M. Oshima.  
言語 English 
掲載誌/書名
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英文: 
巻, 号, ページ Vol. 109        Page 056401
出版年月 2012年7月31日 
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DOI https://doi.org/10.1103/PhysRevLett.109.056401
アブストラクト The correlated electronic structure of SrVO3 has been investigated by angle-resolved photoemission spectroscopy using in situ prepared thin films. Pronounced features of band renormalization have been observed: a sharp kink 60 meV below the Fermi level (EF) and a broad so-called ‘‘high-energy kink’’ 0:3 eV below EF as in the high-Tc cuprates, although SrVO3 does not show magnetic fluctuations. We have deduced the self-energy in a wide energy range by applying the Kramers-Kronig relation to the observed spectra. The obtained self-energy clearly shows a large energy scale of 0:7 eV, which is attributed to electron-electron interaction and gives rise to the 0:3 eVkink in the band dispersion as well as the incoherent peak 1:5 eV below EF. The present analysis enables us to obtain a consistent picture for both the incoherent spectra and the band renormalization.

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