Photoemission study of the filling-control metal-insulator transition in the two-dimensional system La1.17-xPbxVS3.17

A. Ino, S. Fujimori, T. Okane, A. Fujimori, T. Mizokawa, Y. Yasui, T. Nishikawa, M. Sato

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Using photoemission spectroscopy, the electronic structure around the two-dimensional filling-control metal-insulator transition (MIT) of La1.17-xPbx VS3.17 has been studied. The density of state at the Fermi level disappears in going to the insulating phase, i.e., as x approaches ∼ 0.17 or as the temperature decreases at x = 0.15. The chemical potential shift with carrier doping shows a finite jump between the electron- and hole-doped samples and is unusually suppressed around x = 0.17. The results are contrary to a rigid band picture and show the presence of a pseudogap in the metallic phase.

Original languageEnglish
Pages (from-to)263-265
Number of pages3
JournalJournal of Magnetism and Magnetic Materials
Volume226-230
Issue numberPART I
DOIs
Publication statusPublished - 2001 Jan 1
Externally publishedYes

Keywords

  • Electronic structure
  • Phase transitions-metal-insulator
  • Photoemission
  • Two-dimensional systems

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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