Influence of interfacial Dzyaloshinskii-Moriya interaction on the parametric amplification of spin waves

被引：16
|
作者：
Verba, Roman [1 ]
Tiberkevich, Vasil [2 ]
Slavin, Andrei [2 ]
机构：
[1] Natl Acad Sci Ukraine, Inst Magnetism, UA-03142 Kiev, Ukraine
[2] Oakland Univ, Dept Phys, Rochester, MI 48309 USA
来源：
APPLIED PHYSICS LETTERS | 2015年 / 107卷 / 11期
基金：
美国国家科学基金会;
关键词：
IRON-GARNET FILMS; WEAK FERROMAGNETISM; ENVELOPE SOLITONS; DRIVEN; TORQUE;
D O I：
10.1063/1.4931089
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
The influence of the interfacial Dzyaloshinskii-Moriya interaction (IDMI) on the parametric amplification of spin waves propagating in ultrathin ferromagnetic film is considered theoretically. It is shown that the IDMI changes the relation between the group velocities of the signal and idler spin waves in a parametric amplifier, which may result in the complete vanishing of the reversed idler wave. In the optimized case, the idler spin wave does not propagate from the pumping region at all, which increases the efficiency of the amplification of the signal wave and suppresses the spurious impact of the idler waves on neighboring spin-wave processing devices. (C) 2015 AIP Publishing LLC.
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页数：4
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