Metallic quantum well states in artificial structures of strongly correlated oxide

K. Yoshimatsu, K. Horiba, H. Kumigashira, T. Yoshida, A. Fujimori, M. Oshima

研究成果: Article査読

99 被引用数 (Scopus)

抄録

The quantum confinement of strongly correlated electrons in artificial structures provides a platform for studying the behavior of correlated Fermi-liquid states in reduced dimensions. We report the creation and control of two-dimensional electron-liquid states in ultrathin films of SrVO 3 grown on Nb:SrTiO 3 substrates, which are artificial oxide structures that can be varied in thickness by single monolayers. Angle-resolved photoemission from the SrVO 3/Nb:SrTiO 3 samples shows metallic quantum well states that are adequately described by the well-known phase-shift quantization rule. The observed quantum well states in SrVO 3 ultrathin films exhibit distinctive features - such as orbital-selective quantization originating from the anisotropic orbital character of the V 3d states and unusual band renormalization of the subbands near the Fermi level - that reflect complex interactions in the quantum well.

本文言語English
ページ(範囲)319-322
ページ数4
ジャーナルScience
333
6040
DOI
出版ステータスPublished - 2011 7 15
外部発表はい

ASJC Scopus subject areas

  • General

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