Two-dimensional quantum spin liquid with S=1/2 spins interacting with acoustic phonons

被引：3
|
作者：
Aplesnin, SS [1 ]
机构：
[1] Russian Acad Sci, Siberian Branch, LV Kirensky Phys Inst, Krasnoyarsk 660036, Russia
来源：
PHYSICS LETTERS A | 2004年 / 333卷 / 5-6期
关键词：
spin-phonon interactions; spin-liquid; spinon excitations;
D O I：
10.1016/j.physleta.2004.10.064
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
The spin density of states of a two-dimensional antiferromagnet in magnetic field having spins-1/2 and interacting with acoustic phonons is investigated in the nonadiabatic approximation using the quantum Monte Carlo method. It is found the gap energy A in the single particle spin excitations spectrum closes at magnetic field Delta similar or equal to H-c, W-ph < W-s and Delta similar or equal to (1/2)H-c, W-ph > W-s, where W-ph and W-s are the bandwidths of phonon and spin excitations in antiferromagnet. (C) 2004 Elsevier B.V All rights reserved.
引用
收藏
页码：446 / 449
页数：4
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