Spectral Properties near the Mott Transition in the One-Dimensional Hubbard Model

被引：45

作者：

Kohno, Masanori ^{[1
]}

机构：

[1] Natl Inst Mat Sci, WPI Ctr Mat Nanoarchitecton, Tsukuba, Ibaraki 3050044, Japan

来源：

PHYSICAL REVIEW LETTERS | 2010年 / 105卷 / 10期

关键词：

Statistical mechanics;

D O I：

10.1103/PhysRevLett.105.106402

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The single-particle spectral properties near the Mott transition in the one-dimensional Hubbard model are investigated by using the dynamical density-matrix renormalization group method and the Bethe ansatz. The pseudogap, hole-pocket behavior, spectral-weight transfer, and upper Hubbard band are explained in terms of spinons, holons, antiholons, and doublons. The Mott transition is characterized by the emergence of a gapless mode whose dispersion relation extends up to the order of hopping t (spin exchange J) in the weak (strong) interaction regime caused by infinitesimal doping.

引用

页数：4

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