Metal-insulator transition in 1T-TaS2-xSex

O. Shiino, T. Watanabe, T. Endo, T. Hanaguri, K. Kitazawa, M. Nohara, H. Takagi, C. Murayama, N. Takeshita, N. Môri, T. Hasegawa, W. Yamaguchi

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)

Abstract

The transition metal dichalcogenide, 1T-TaS2, shows metal-insulator transition (MIT) accompanying the nearly commensurate (NC)-commensurate (C) charge density wave (CDW) phase transition at 180 K. It has been proposed that the low-temperature C-CDW phase is a Mott insulator. However, our specific heat and magnetic susceptibility measurements in the 1T-TaS2-xSex system revealed no indications of effective mass enhancement or intrinsic localized spins in the insulating phase. So we propose a new model for the MIT in which the interlayer coupling of the CDW superstructure plays an important role.

Original languageEnglish
Pages (from-to)1673-1674
Number of pages2
JournalPhysica B: Condensed Matter
Volume284-288
Issue numberPART II
DOIs
Publication statusPublished - 2000
Externally publishedYes

Keywords

  • 1T-TaSSe
  • Charge density wave
  • Metal-insulator transition

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

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