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

Research output: Contribution to journalArticle

4 Citations (Scopus)

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.

Original languageEnglish
Article number075103
Pages (from-to)751031-751036
Number of pages6
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume64
Issue number7
DOIs
Publication statusPublished - 2001 Aug 15

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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