GROUND-STATE PROPERTIES OF THE SPIN-1/2 ANTIFERROMAGNETIC HEISENBERG-MODEL ON A CUBIC LATTICE BY A MONTE-CARLO METHOD

被引：7
|
作者：
SAUERWEIN, RA
DEOLIVEIRA, MJ
机构：
来源：
MODERN PHYSICS LETTERS B | 1995年 / 9卷 / 10期
关键词：
D O I：
10.1142/S0217984995000589
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
The spin-1/2 antiferromagnetic Heisenberg model with spatial anisotropy is studied on a cubic lattice by a Monte Carlo Method. Two types of spatial anisotropies are considered: planar and axial. The staggered magnetization m(dagger) and the ground state energy per site epsilon(0) are obtained as a function of the anisotropy. In the isotropic case we have obtained m(dagger) = 0.429 +/- 0.001 in units where the saturated value is 0.5 and epsilon(0) = -0.899 +/- 0.001.
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页码：619 / 627
页数：9
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