Effective Hamiltonian for a half-filled Hubbard chain with alternating on-site interactions

被引：6

作者：

Kakashvili, P ^{[1
]}

Japaridze, GI

机构：

[1] Chalmers Univ Technol, Inst Theoret Phys, SE-41296 Gothenburg, Sweden

[2] Univ Gothenburg, SE-41296 Gothenburg, Sweden

[3] Georgian Acad Sci, Inst Phys, GE-0177 Tbilisi, Georgia

来源：

JOURNAL OF PHYSICS-CONDENSED MATTER | 2004年 / 16卷 / 32期

关键词：

D O I：

10.1088/0953-8984/16/32/017

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

We derive an effective spin Hamiltonian for the one-dimensional half-filled alternating Hubbard model in the limit of strong on-site repulsion. We show that the effective Hamiltonian is a spin S = 1/2 Heisenberg chain with asymmetric next-nearest-neighbour (nnn) exchange.

引用

页码：5815 / 5823

页数：9

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