Two Types of Mott Transitions

Masatoshi Imada*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

68 Citations (Scopus)


One type of Mott transition (MTl) is characterized by diverging enhancement of the charge effective mass when one approaches a Mott insulator from the side of the paramagnetic metal. Another fundamentally different type of Mott transition (MT2) is shown to exist when a spin gap opens. The Unear coefficient of the specific heat y decreases and then vanishes at the transition point of MT2 in sharp contrast with MTl. As an example, a dimerized t-J model is shown to undergo MT2. The underlying pairing mechanism determines the character of MT2. Recent controversial experimental results on the Mott transitions in copper oxides and other strongly correlated systems are discussed from the above viewpoint.

Original languageEnglish
Pages (from-to)1105-1108
Number of pages4
Journaljournal of the physical society of japan
Issue number4
Publication statusPublished - 1993 Jan 1
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy(all)


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