Pyrochlore antiferromagnet: A three-dimensional quantum spin liquid

被引：331

作者：

Canals, B ^{[1
]}

Lacroix, C ^{[1
]}

机构：

[1] CNRS, Lab Magnetisme Louis Neel, F-38042 Grenoble 9, France

来源：

PHYSICAL REVIEW LETTERS | 1998年 / 80卷 / 13期

关键词：

D O I：

10.1103/PhysRevLett.80.2933

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The quantum pyrochlore antiferromagnet is studied by perturbative expansions and exact diagonalization of small clusters. We find that the ground state is a spin-liquid state: The spin-spin correlation functions decay exponentially with distance and the correlation length never exceeds the interatomic distance. The calculated magnetic neutron diffraction cross section is in very good agreement with experiments performed on Y(Sc)Mn-2. The low energy excitations are singlet-singlet ones, with a finite spin gap.

引用

页码：2933 / 2936

页数：4

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