Dynamic exponent of t-J and t-J-W model

Hirokazu Tsunetsugu, Masatoshi Imada

Research output: Contribution to journalArticle

20 Citations (Scopus)

Abstract

Drude weight of optical conductivity is calculated at zero temperature by exact diagonalization for the two-dimensional t-J model with the two-particle term, W. For the ordinary t-J model with W=0, the scaling of the Drude weight D ∝ δ2 for small doping concentration δ is obtained, which indicates anomalous dynamic exponent z=4 of the Mott transition. When W is switched on, the dynamic exponent recovers its conventional value z=2. This corresponds to an incoherent-to-coherent transition associated with the switching of the two-particle transfer.

Original languageEnglish
Pages (from-to)1864-1867
Number of pages4
JournalJournal of the Physical Society of Japan
Volume67
Issue number6
DOIs
Publication statusPublished - 1998 Jan 1
Externally publishedYes

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Keywords

  • Drude weight
  • Mott transition
  • Optical conductivity
  • Strongly correlated electrons

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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