Evolution of metallic states from the Hubbard band in the two-dimensional Mott system BaCo1-xNixS2

T. Sato; H. Kumigashira; D. Ionel; T. Takahashi; I. Hase; H. Ding; J. C. Campuzano; S. Shamoto

doi:10.1103/PhysRevB.64.075103

Evolution of metallic states from the Hubbard band in the two-dimensional Mott system BaCo_1-xNi_xS₂

T. Sato, H. Kumigashira, D. Ionel, T. Takahashi, I. Hase, H. Ding, J. C. Campuzano, S. Shamoto

Department of Physics

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9 Citations (Scopus)

Abstract

We report angle-resolved photoemission spectroscopy on the layered Mott system BaCo_1-xNi_xS₂. (x = 0.18, 0.28) across the phase transition from the antiferromagnetic insulator to anomalous metal, We found that the lower Hubbard band in the insulating phase possesses a remnant of the Fermi surface in the metallic phase and gradually evolves into the metallic bands with carrier doping. We compare the experimental result with those of the high-T_c cuprates to discuss the absence of superconductivity in BaCo_1-xNi_xS₂.

Original language	English
Article number	075103
Pages (from-to)	751031-751036
Number of pages	6
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	64
Issue number	7
DOIs	https://doi.org/10.1103/PhysRevB.64.075103
Publication status	Published - 2001 Aug 15

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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10.1103/PhysRevB.64.075103

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abstract = "We report angle-resolved photoemission spectroscopy on the layered Mott system BaCo1-xNixS2. (x = 0.18, 0.28) across the phase transition from the antiferromagnetic insulator to anomalous metal, We found that the lower Hubbard band in the insulating phase possesses a remnant of the Fermi surface in the metallic phase and gradually evolves into the metallic bands with carrier doping. We compare the experimental result with those of the high-Tc cuprates to discuss the absence of superconductivity in BaCo1-xNixS2.",

author = "T. Sato and H. Kumigashira and D. Ionel and T. Takahashi and I. Hase and H. Ding and Campuzano, {J. C.} and S. Shamoto",

year = "2001",

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doi = "10.1103/PhysRevB.64.075103",

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T1 - Evolution of metallic states from the Hubbard band in the two-dimensional Mott system BaCo1-xNixS2

AU - Sato, T.

AU - Kumigashira, H.

AU - Ionel, D.

AU - Takahashi, T.

AU - Hase, I.

AU - Ding, H.

AU - Campuzano, J. C.

AU - Shamoto, S.

PY - 2001/8/15

Y1 - 2001/8/15

N2 - We report angle-resolved photoemission spectroscopy on the layered Mott system BaCo1-xNixS2. (x = 0.18, 0.28) across the phase transition from the antiferromagnetic insulator to anomalous metal, We found that the lower Hubbard band in the insulating phase possesses a remnant of the Fermi surface in the metallic phase and gradually evolves into the metallic bands with carrier doping. We compare the experimental result with those of the high-Tc cuprates to discuss the absence of superconductivity in BaCo1-xNixS2.

AB - We report angle-resolved photoemission spectroscopy on the layered Mott system BaCo1-xNixS2. (x = 0.18, 0.28) across the phase transition from the antiferromagnetic insulator to anomalous metal, We found that the lower Hubbard band in the insulating phase possesses a remnant of the Fermi surface in the metallic phase and gradually evolves into the metallic bands with carrier doping. We compare the experimental result with those of the high-Tc cuprates to discuss the absence of superconductivity in BaCo1-xNixS2.

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Evolution of metallic states from the Hubbard band in the two-dimensional Mott system BaCo_1-xNi_xS₂

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