Self-energy on the low- to high-energy electronic structure of correlated metal SrVO 3

S. Aizaki, T. Yoshida, K. Yoshimatsu, M. Takizawa, M. Minohara, S. Ideta, A. Fujimori, K. Gupta, P. Mahadevan, K. Horiba, H. Kumigashira, M. Oshima

研究成果: Article査読

42 被引用数 (Scopus)

抄録

The correlated electronic structure of SrVO 3 has been investigated by angle-resolved photoemission spectroscopy using insitu prepared thin films. Pronounced features of band renormalization have been observed: a sharp kink ∼60meV below the Fermi level (E F) and a broad so-called "high-energy kink" ∼0.3eV below E F as in the high-T c cuprates, although SrVO 3 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 ∼0.7eV, which is attributed to electron-electron interaction and gives rise to the ∼0.3eV kink in the band dispersion as well as the incoherent peak ∼1.5eV below E F. The present analysis enables us to obtain a consistent picture for both the incoherent spectra and the band renormalization.

本文言語English
論文番号056401
ジャーナルPhysical review letters
109
5
DOI
出版ステータスPublished - 2012 7 31
外部発表はい

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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