SINGLET GROUND-STATE OF THE PERIODIC ANDERSON MODEL AT HALF FILLING - A RIGOROUS RESULT

被引：83

作者：

UEDA, K

TSUNETSUGU, H

SIGRIST, M

机构：

[1] SWISS FED INST TECHNOL,CH-8093 ZURICH,SWITZERLAND

[2] SWISS FED INST TECHNOL,INTERDISCIPLINARY PROJECT CTR SUPERCOMP,CH-8092 ZURICH,SWITZERLAND

[3] UNIV TSUKUBA,INST MAT SCI,TSUKUBA 305,JAPAN

[4] UNIV TOKYO,INST SOLID STATE PHYS,TOKYO 106,JAPAN

来源：

PHYSICAL REVIEW LETTERS | 1992年 / 68卷 / 07期

关键词：

D O I：

10.1103/PhysRevLett.68.1030

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

It is proved that the ground state of the symmetric periodic Anderson model forms a total spin singlet at half filling. This result can also be applied to the Kondo lattice model, at least for the weak and the very strong antiferromagnetic-coupling limit. For the strong coupling limit of the Kondo lattice it is additionally proved that the singlet ground state exists even when two holes are doped to the half-filled band.

引用

页码：1030 / 1033

页数：4

共 14 条

[1] GROUND-STATE PROPERTIES OF THE PERIODIC ANDERSON MODEL [J].