Spin wave collimation using a flat metasurface

被引：14
|
作者：
Zelent, M. [1 ]
Mailyan, M. [2 ]
Vashistha, V. [1 ]
Gruszecki, P. [1 ]
Gorobets, O. Y. [2 ]
Gorobets, Y., I [2 ,3 ]
Krawczyk, M. [1 ]
机构：
[1] Adam Mickiewicz Univ, Fac Phys, Ul Uniwersytetu Poznanskiego 2, PL-61614 Poznan, Poland
[2] Natl Tech Univ, Fac Phys & Math, Igor Sikorsky Kyiv Polytech Inst, 37 Peremogy Ave, UA-03056 Kiev, Ukraine
[3] Natl Acad Sci Ukraine, Inst Magnetism, 36-B Vernadskogo St, UA-03142 Kiev, Ukraine
来源：
NANOSCALE | 2019年 / 11卷 / 19期
基金：
欧盟地平线“2020”;
关键词：
NONMAGNETIC METAL; EXCHANGE;
D O I：
10.1039/c8nr10484k
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
In this paper, we show that the phase shift of spin waves propagating in the plane of the film can be controlled by a metasurface formed by an ultra-narrow non-magnetic spacer separating edges of the two thin ferromagnetic films. For this purpose, we exploit the strength of the exchange coupling of the RKKY type between the films which allows tuning the phase of the transmitted spin waves in the wide range of angles [-/2; /2]. We combined the phase-shift dependency along the interface with the lens equation to demonstrate numerically the metalens for spin waves.
引用
收藏
页码：9743 / 9748
页数：6
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