Terahertz emission in the ferromagnetic-antiferromagnetic structure

被引：0
|
作者：
Yu. V. Gulayev
P. E. Zil’berman
S. I. Kasatkin
G. M. Mikhailov
S. G. Chigarev
机构：
[1] Russian Academy of Sciences,Kotel’nikov Institute of Radio Engineering and Electronics (Fryazino Branch)
[2] Russian Academy of Sciences,Trapeznikov Institute of Control Sciences (Automation and Telemechanics)
[3] Russian Academy of Sciences,Institute of Microelectronic Technology and Ultrahigh
来源：
Journal of Communications Technology and Electronics | 2013年 / 58卷
关键词：
Sapphire Substrate; Ferromagnetic Film; Energy Subbands; Terahertz Emission; Antiferromagnetic Layer;
D O I：
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中图分类号：
学科分类号：
摘要：
Current flow in the structure consisting of a hard-magnetic ferromagnetic rod (hardened steel) with a diameter of up to 100 μm that contacts a thin (10–100 nm) ferromagnetic (FeMn) film is studied at room temperature. Effective magnetization is induced in the FeMn film in the presence of the spin-polarized current in spite of the absence of the intrinsic magnetization. The terahertz radiation that is detected in this work is caused by the precession of the induced magnetization. The emission is interpreted using the recent theoretical predictions on the effect of the sd exchange on the lattice dynamics of antiferromagnetic layer.
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页码：716 / 719
页数：3
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