Charge Mass Singularity in Two-Dimensional Hubbard Model

Nobuo Furukawa, Masatoshi Imada

研究成果: Article査読

76 被引用数 (Scopus)

抄録

Two-dimensional Hubbard model with both nearest- and next-nearest-neighbor transfers is studied. A singularity in the charge susceptibility at the Mott transition point is observed, leading to the anomaly of the charge mass mx in the form mtoz\Sr\where S is the doping concentration. The singularity is similar to that in the case without the next-nearest-neighbor transfer. This indicates that the singularity in the charge mass is a universal nature of this model, irrespective of its band structure.

本文言語English
ページ(範囲)2557-2560
ページ数4
ジャーナルjournal of the physical society of japan
62
8
DOI
出版ステータスPublished - 1993 1 1
外部発表はい

ASJC Scopus subject areas

  • 物理学および天文学(全般)

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