PHASE-DIAGRAM OF THE KONDO-LATTICE MODEL

被引：8
|
作者：
UEDA, K
TSUNETSUGU, H
SIGRIST, M
机构：
[1] UNIV TOKYO, INST SOLID STATE PHYS, TOKYO 106, JAPAN
[2] SWISS FED INST TECHNOL, CH-8093 ZURICH, SWITZERLAND
[3] UNIV TSUKUBA, INST MAT SCI, TSUKUBA, IBARAKI 305, JAPAN
[4] ETHZ, CTR INTERDISCIPLINARY PROJECT SUPERCOMP, ZURICH, SWITZERLAND
来源：
PHYSICA B-CONDENSED MATTER | 1993年 / 186-88卷
关键词：
D O I：
10.1016/0921-4526(93)90573-O
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
The Kondo lattice model can be characterized by two parameters: one is the exchange coupling constant J/t and the other is the density of conduction electrons rho = N/L. In the low-density limit the Kondo lattice model has a ferromagnetic ground state for any J. In one dimension one can show further that the ground state is ferromagnetic also in the strong coupling limit at any rho, while it has a spin liquid ground state at the half-filling. The phase diagram of the Kondo lattice model in one dimension is discussed in the entire space of the parameters based on exact diagonalization.
引用
收藏
页码：358 / 361
页数：4
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