Quantum Mott transition and superconductivity

Research output: Contribution to journalArticle

15 Citations (Scopus)

Abstract

The gas-liquid transition is a first-order transition terminating at a finite-temperature critical point with diverging density fluctuations. The Mott transition, a metal-insulator transition driven by Coulomb repulsion between electrons, has been identified with this textbook transition. However, the critical temperature of the Mott transition can be suppressed, leading to unusual quantum criticality, which results in a breakdown of the conventional Ginzburg-Landau-Wilson scheme. This accounts for non-Fermi-liquid-like properties, and strongly momentum-dependent quasiparticles as in many materials near the Mott insulator. Above all, the mode-coupling theory of the density fluctuations supports d-wave superconductivity at the order of 100K for the relevant parameters of copper oxide superconductors.

Original languageEnglish
Pages (from-to)859-862
Number of pages4
Journaljournal of the physical society of japan
Volume74
Issue number3
DOIs
Publication statusPublished - 2005 Mar 1
Externally publishedYes

Keywords

  • High-T superconductivity
  • Mott transition
  • Quantum phase transition

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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