TY - JOUR
T1 - Origin of the Anomalous Mass Renormalization in Metallic Quantum Well States of Strongly Correlated Oxide SrVO3
AU - Kobayashi, Masaki
AU - Yoshimatsu, Kohei
AU - Sakai, Enju
AU - Kitamura, Miho
AU - Horiba, Koji
AU - Fujimori, Atsushi
AU - Kumigashira, Hiroshi
N1 - Publisher Copyright:
© 2015 American Physical Society.
PY - 2015/8/13
Y1 - 2015/8/13
N2 - In situ angle-resolved photoemission spectroscopy (ARPES) has been performed on SrVO3 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.
AB - In situ angle-resolved photoemission spectroscopy (ARPES) has been performed on SrVO3 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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U2 - 10.1103/PhysRevLett.115.076801
DO - 10.1103/PhysRevLett.115.076801
M3 - Article
AN - SCOPUS:84939823996
SN - 0031-9007
VL - 115
JO - Physical Review Letters
JF - Physical Review Letters
IS - 7
M1 - 076801
ER -