XY behaviour of the 2D S=1/2 antiferromagnet in a field

被引：0

作者：

Cuccoli, A

Roscilde, T ^{[1
]}

Vaia, R

Verrucchi, P

机构：

[1] Univ So Calif, Dept Phys & Astron, Los Angeles, CA 90089 USA

[2] Univ Florence, Dipartimento Fis, I-50019 Sesto Fiorentino, FI, Italy

[3] CNR, Ist Fis Applicata Nello Carrara, I-50127 Florence, Italy

[4] Ist Nazl Fis Mat, UdR Firenze, I-50019 Sesto Fiorentino, FI, Italy

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2004年 / 272卷

关键词：

quantum spin systems; quantum Monte Carlo; Berezinskii-Kosterlitz-Thouless transition;

D O I：

暂无

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The S = 1/2 quantum Heisenberg antiferromagnet on the square lattice in a uniform arbitrary magnetic field is studied by means of quantum Monte Carlo simulations. The applied field induces an effective easy-plane anisotropy and consequently a Berezhinskii-Kosterlitz-Thouless (BKT) transition: the expected BKT behaviour is observed to persist both in the limit of vanishing field and near the saturation field. Experimental implications are discussed. (C) 2004 Elsevier B.V. All rights reserved.

引用

页码：884 / 885

页数：2

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