Spin-liquid state for two-dimensional Heisenberg antiferromagnets on a triangular lattice

被引：4

作者：

Dong, ZH ^{[1
]}

Feng, SP

机构：

[1] Beijing Normal Univ, Dept Phys, Beijing 100875, Peoples R China

[2] Acad Sinica, Natl Lab Superconduct, Beijing 100080, Peoples R China

来源：

MODERN PHYSICS LETTERS B | 1998年 / 12卷 / 17期

基金：

中国国家自然科学基金;

关键词：

D O I：

10.1142/S0217984998000792

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The spin liquid state of the antiferromagnetic Heisenberg model on a triangular lattice is studied within the self-consistent Green's function method. It is shown that the spin excitation spectra is gapless, and ground-state energy per site is E-g/NJ = -0.966, which is in very good agreement with the results obtained within the variational Monte Carlo method based on the resonating-valence-bond state. Some thermodynamic properties are also discussed.

引用

页码：677 / 683

页数：7

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