SPIN-LIQUID GROUND-STATE OF THE HALF-FILLED KONDO LATTICE IN ONE DIMENSION

被引：130

作者：

TSUNETSUGU, H

HATSUGAI, Y

UEDA, K

SIGRIST, M

机构：

[1] SWISS FED INST TECHNOL,INTERDISZIPLINARES PROJEKTZENTRUM SUPERCOMP,CH-8092 ZURICH,SWITZERLAND

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

[3] PAUL SCHERRER INST,CH-5232 VILLIGEN,SWITZERLAND

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

来源：

PHYSICAL REVIEW B | 1992年 / 46卷 / 05期

关键词：

D O I：

10.1103/PhysRevB.46.3175

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

By finite-size analysis of exact diagonalization the existence of a finite spin gap is confirmed for both antiferromagnetic and ferromagnetic coupling in the half-filled Kondo lattice model. For all finite values of antiferromagnetic coupling the system belongs to a class of coherent Kondo spin singlet, whereas for any finite ferromagnetic coupling it scales to a spin S = 1 antiferromagnetic chain with a Haldane gap.

引用

页码：3175 / 3178

页数：4

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