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Kobayashi M, Yoshimatsu K, Sakai E, et al. Origin of the Anomalous Mass Renormalization in Metallic Quantum Well States of Strongly Correlated Oxide SrVO_{3}. Phys Rev Lett. 2015;115(7):076801doi: 10.1103/PhysRevLett.115.076801.
Kobayashi, M., Yoshimatsu, K., Sakai, E., Kitamura, M., Horiba, K., Fujimori, A., & Kumigashira, H. (2015). Origin of the Anomalous Mass Renormalization in Metallic Quantum Well States of Strongly Correlated Oxide SrVO_{3}. Physical review letters, 115(7), 076801. https://doi.org/10.1103/PhysRevLett.115.076801
Kobayashi, Masaki, et al. "Origin of the Anomalous Mass Renormalization in Metallic Quantum Well States of Strongly Correlated Oxide SrVO_{3}." Physical review letters vol. 115,7 (2015): 076801. doi: https://doi.org/10.1103/PhysRevLett.115.076801
Kobayashi M, Yoshimatsu K, Sakai E, Kitamura M, Horiba K, Fujimori A, Kumigashira H. Origin of the Anomalous Mass Renormalization in Metallic Quantum Well States of Strongly Correlated Oxide SrVO_{3}. Phys Rev Lett. 2015 Aug 14;115(7):076801. doi: 10.1103/PhysRevLett.115.076801. Epub 2015 Aug 13. PMID: 26317738.
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Phys Rev Lett. 2015 Aug 14;115(7):076801. doi: 10.1103/PhysRevLett.115.076801. Epub 2015 Aug 13.

Origin of the Anomalous Mass Renormalization in Metallic Quantum Well States of Strongly Correlated Oxide SrVO_{3}.

Physical review letters

Masaki Kobayashi, Kohei Yoshimatsu, Enju Sakai, Miho Kitamura, Koji Horiba, Atsushi Fujimori, Hiroshi Kumigashira

Affiliations

  1. Photon Factory, Institute of Materials Structure Science, High Energy Accelerator Research Organization (KEK), 1-1 Oho, Tsukuba 305-0801, Japan.
  2. Department of Physics, University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan.

PMID: 26317738 DOI: 10.1103/PhysRevLett.115.076801

Abstract

In situ angle-resolved photoemission spectroscopy (ARPES) has been performed on SrVO_{3} ultrathin films, which show metallic quantum well (QW) states, to unveil the origin of the anomalous mass enhancement in the QW subbands. The line-shape analysis of the ARPES spectra reveals that the strength of the electron correlation increases as the subband bottom energy approaches the Fermi level. These results indicate that the anomalous subband-dependent mass enhancement mainly arises from the quasi-one-dimensional character of confined V 3d states as a result of their orbital-selective quantization.

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