Charge Gap, Charge Susceptibility and Spin Correlation in the Hubbard Model on a Square Lattice

Nobuo Furukawa, Masatoshi Imada

Research output: Contribution to journalArticle

55 Citations (Scopus)

Abstract

Quantum Monte Carlo study of the Hubbard model on a square lattice in the ground state is reported. For the on-site interaction U=4 scaled by the transfer, the charge excitation gap at the half-filling is estimated to be δ, = 0.58±0.08. Near half-filling, the charge compressibility k follows the form k∝ δ-1 for the doping concentration δ, indicating a divergent behavior as the system approaches half-filling, while k = 0 at the half-filling. The incommensurate spin correlation length ∊ scales as [formula omitted].

Original languageEnglish
Pages (from-to)3604-3607
Number of pages4
Journaljournal of the physical society of japan
Volume60
Issue number11
DOIs
Publication statusPublished - 1991 Nov

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Fingerprint Dive into the research topics of 'Charge Gap, Charge Susceptibility and Spin Correlation in the Hubbard Model on a Square Lattice'. Together they form a unique fingerprint.

  • Cite this