Quantum disordered ground state for the frustrated square lattice

被引：0

作者：

Kalz, A. ^{[1
]}

Honecker, A. ^{[1
]}

Fuchs, S. ^{[1
]}

Pruschke, T. ^{[1
]}

机构：

[1] Univ Gottingen, Inst Theoret Phys, D-37077 Gottingen, Germany

来源：

INTERNATIONAL CONFERENCE ON STRONGLY CORRELATED ELECTRON SYSTEMS (SCES 2011) | 2012年 / 391卷

关键词：

HIGH-TEMPERATURE SUPERCONDUCTORS; STRONGLY CORRELATED SYSTEMS; OPEN-SOURCE SOFTWARE; MONTE-CARLO; MODEL; MAGNETISM;

D O I：

10.1088/1742-6596/391/1/012156

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We present Quantum Monte-Carlo simulations of an exchange-anisotropic spin-1/2 Heisenberg model on a square lattice with nearest and next-nearest neighbor interactions. The ground state phase diagram shows two classical magnetically ordered phases for dominating antiferromagnetic S-z-interactions and for large quantum fluctuations a ferromagnetic order in the x-y plane. In between a finite region is detected where neither classical nor quantum mechanical order, e.g. long-ranged dimer correlations, are found.

引用

页数：4

共 33 条

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