Quantum metal-insulator transition at half-filling

被引：1

作者：

Lin, HQ

Wu, CQ ^{[1
]}

机构：

[1] Chinese Univ Hong Kong, Dept Phys, Shatin, Hong Kong, Peoples R China

[2] Fudan Univ, Dept Phys, Res Ctr Theoret Phys, Shanghai 200433, Peoples R China

来源：

SYNTHETIC METALS | 2001年 / 119卷 / 1-3期

关键词：

metal-insulator transition; electron-solid interactions;

D O I：

10.1016/S0379-6779(00)01384-9

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

For the Su-Schrieffer-Heeger-Hubbard model with spin-1/2 electrons at half-filling, we show that there is a metal-insulator transition when both the phonon and electron fluctuations are taken into account. At anti-adiabatic limit, the transition happens at U/t(0) = 2 pi lambda, where lambda is the dimension-less e-p coupling constant.

引用

收藏

页码：231 / 232

页数：2

相关论文

共 14 条

[1] Phase diagram of a Heisenberg spin-Peierls model with quantum phonons [J].

Bursill, RJ ;

McKenzie, RH ;

Hamer, CJ .

PHYSICAL REVIEW LETTERS, 1999, 83 (02) :408-411

[2]

EMERY VJ, 1979, HIGHLY CONDUCTING ON

[3] PHASE-DIAGRAM OF ONE-DIMENSIONAL ELECTRON-PHONON SYSTEMS .1. THE SU-SCHRIEFFER-HEEGER MODEL [J].

FRADKIN, E ;

HIRSCH, JE .

PHYSICAL REVIEW B, 1983, 27 (03) :1680-1697

[4] SOLITONS IN CONDUCTING POLYMERS [J].

HEEGER, AJ ;

KIVELSON, S ;

SCHRIEFFER, JR ;

SU, WP .

REVIEWS OF MODERN PHYSICS, 1988, 60 (03) :781-850

[5] STUDIES OF POLARON MOTION .1. THE MOLECULAR-CRYSTAL MODEL [J].

HOLSTEIN, T .

ANNALS OF PHYSICS, 1959, 8 (03) :325-342

[6] STUDIES OF POLARON MOTION .2. THE SMALL POLARON [J].

HOLSTEIN, T .

ANNALS OF PHYSICS, 1959, 8 (03) :343-389

[7] Metal-insulator transition in the one-dimensional Holstein model at half filling [J].

Jeckelmann, E ;

Zhang, CL ;

White, SR .

PHYSICAL REVIEW B, 1999, 60 (11) :7950-7955

[8]

Peierls R., 1955, QUANTUM THEORY SOLID

[9] Spin-Peierls transition in the Heisenberg chain with finite-frequency phonons [J].

Sandvik, AW ;

Campbell, DK .

PHYSICAL REVIEW LETTERS, 1999, 83 (01) :195-198

[10] SOLITON EXCITATIONS IN POLYACETYLENE [J].

SU, WP ;

SCHRIEFFER, JR ;

HEEGER, AJ .

PHYSICAL REVIEW B, 1980, 22 (04) :2099-2111