Ferromagnetism in an Itinerant Electron System

被引：0
|
作者：
D. F. WAANG(Institut de Physique Theorique Ecole Polytechnique Federale de Lausanne
机构：
来源：
Communications in Nonlinear Science & Numerical Simulation | 1996年 / 03期
关键词：
Ferromagnetism; Hubbard model; Kondo-lattice model;
D O I：
暂无
中图分类号：
+ [];
学科分类号：
摘要：
In this work, the ground states of the Hubbard model on complete graph arestudied, for a finite lattice sise L and arbitrary on-site energy U. We construct explicitlythe ground states of the system when the number of the electrons Ne ≥ L + 1. In particular,for Ne = L + 1, the ground state is ferromagntic with total spin sg = (Ne - 2)/2.
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页码：12 / 16
页数：5
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