Quantum fluctuations of the antiferro-antiferromagnetic double-layer
Jiang Wei(姜伟)a)†, Zhu Cheng-Bo(朱程博)a), Yu Gui-Hong(于桂红)a), and Lo Veng-Cheong(罗永祥)b)
a School of Science, Shenyang University of Technology, Shenyang 110178, China; b Department of Applied Physics, The Hong Kong Polytechnic University, Hong Kong, China
Abstract This paper stuides the magnetization and quantum fluctuations of an antiferro-antiferromagnetic (AF-AF) double-layer at zero temperature. It is found that the exchanges and anisotropy constants affect the quantum fluctuations of spins. If the anisotropy exists, there will be no acoustic energy branch in the system. The anisotropy constant, antiferromagnetic intralayer and interlayer coupling have important roles in a balance of the quantum competition.
Received: 12 April 2009
Revised: 20 April 2008
Accepted manuscript online:
PACS:
75.10.Jm
(Quantized spin models, including quantum spin frustration)
(Magnetization curves, hysteresis, Barkhausen and related effects)
Fund: Project supported by the Natural
Science Foundation of the Educational Department of Liaoning
Province, China (Grant Nos
20060638 and 2008533).
Cite this article:
Jiang Wei(姜伟), Zhu Cheng-Bo(朱程博), Yu Gui-Hong(于桂红), and Lo Veng-Cheong(罗永祥) Quantum fluctuations of the antiferro-antiferromagnetic double-layer 2009 Chin. Phys. B 18 3547
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