中国物理B ›› 2009, Vol. 18 ›› Issue (8): 3547-3550.doi: 10.1088/1674-1056/18/8/068

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Quantum fluctuations of the antiferro-antiferromagnetic double-layer

罗永祥1, 姜伟2, 朱程博2, 于桂红2   

  1. (1)Department of Applied Physics, The Hong Kong Polytechnic University, Hong Kong, China; (2)School of Science, Shenyang University of Technology, Shenyang 110178, China
  • 收稿日期:2009-04-12 修回日期:2008-04-20 出版日期:2009-08-20 发布日期:2009-08-20
  • 基金资助:
    Project supported by the Natural Science Foundation of the Educational Department of Liaoning Province, China (Grant Nos 20060638 and 2008533).

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)   

  1. a School of Science, Shenyang University of Technology, Shenyang 110178, China; b Department of Applied Physics, The Hong Kong Polytechnic University, Hong Kong, China
  • Received:2009-04-12 Revised:2008-04-20 Online:2009-08-20 Published:2009-08-20
  • Supported by:
    Project supported by the Natural Science Foundation of the Educational Department of Liaoning Province, China (Grant Nos 20060638 and 2008533).

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摘要： 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.

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.

Key words: quantum fluctuations, antiferromagnetic double-layer, magnetization

中图分类号:  (Quantized spin models, including quantum spin frustration)

  • 75.10.Jm
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)