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Chin. Phys. B, 2009, Vol. 18(8): 3547-3550    DOI: 10.1088/1674-1056/18/8/068
CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES Prev   Next  

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.
Keywords:  quantum fluctuations      antiferromagnetic double-layer      magnetization  
Received:  12 April 2009      Revised:  20 April 2008      Accepted manuscript online: 
PACS:  75.10.Jm (Quantized spin models, including quantum spin frustration)  
  75.30.Ds (Spin waves)  
  75.30.Et (Exchange and superexchange interactions)  
  75.30.Gw (Magnetic anisotropy)  
  75.50.Ee (Antiferromagnetics)  
  75.60.Ej (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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