| 两种非线性反铁磁晶体交界面上磁表面波的传播特性 |
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| 引用本文： | 吴中,王奇.两种非线性反铁磁晶体交界面上磁表面波的传播特性[J].物理学报,2001,50(6):1178-1184. |
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| 作者姓名： | 吴中 王奇 |
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| 作者单位： | 上海大学物理系,上海200436 |
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| 摘 要： | 研究了两非线性单轴反铁磁晶体交界面上表面波的传播特性.理论分析和数值模拟表明:入射电磁波只有同时满足频率阈值和功率阈值条件才能在该非线性波导系统中形成稳定传播的表面波.随着传输功率的不断提高,磁场峰值将由一非线性晶体中跃入另一非线性晶体中,并逐渐靠近交界面.表面波动率变化不会对交界面处的磁场振幅产生影响,频率是影响其振幅大小的唯一因素.
关键词：
反铁磁晶体
非线性表面波
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| 关 键 词： | 反铁磁晶体 非线性表面波 |
| 收稿时间： | 2000-12-12 |
| 修稿时间： | 2000年12月12 |
PROPAGATION PROPERTIES OF MAGNETIC SURFACE WAVES ON THE INTERFACE BETWEEN TWO NONLINEAR ANTIFERROMAGNETS |
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| WU ZHONG,WANG QI.PROPAGATION PROPERTIES OF MAGNETIC SURFACE WAVES ON THE INTERFACE BETWEEN TWO NONLINEAR ANTIFERROMAGNETS[J].Acta Physica Sinica,2001,50(6):1178-1184. |
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| Authors: | WU ZHONG WANG QI |
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| Abstract: | The nonlinear behavior of surface waves on the interface between two uni-axis antiferromagnets is studied.The theoretical analysis and the numerical simulation show that there exist two thresholds:frequency threshold and power threshold.All the incident waves satisfying the two thresholds can steadily propagate in this new guiding structure.It is indicated that the peak field will jump from one antiferromagnet into another when the power increases. It is also revealed that the magnetic field amplitude on the interface is not power-dependent but frequency-dependent. |
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| Keywords: | antiferromagnetic crystals nonlinear surface waves |
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