Resonant and nonresonant scattering of dipole-dominated spin waves from a region of inhomogeneous magnetic field in a ferromagnetic film

被引:70
|
作者
Kostylev, M. P. [1 ]
Serga, A. A.
Schneider, T.
Neumann, T.
Leven, B.
Hillebrands, B.
Stamps, R. L.
机构
[1] Tech Univ Kaiserslautern, Dept Phys, D-67663 Kaiserslautern, Germany
[2] Tech Univ Kaiserslautern, Forsch Schwerpunkt MINAS, D-67663 Kaiserslautern, Germany
[3] Univ Western Australia, Sch Phys, Crawley, WA 6009, Australia
[4] St Petersburg Electrotech Univ, FET Dept, St Petersburg 197376, Russia
关键词
D O I
10.1103/PhysRevB.76.184419
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
The transmission of a dipole-dominated spin wave in a ferromagnetic film through a localized inhomogeneity in the form of a magnetic field produced by a dc through a wire placed on the film surface was studied experimentally and theoretically. It was shown that the amplitude and phase of the transmitted wave can be simultaneously affected by the current induced field, a feature that will be relevant for logic based on spin wave transport. The direction of the current creates either a barrier or a well for spin wave transmission. The main observation is that the current dependence of the amplitude of the spin wave transmitted through the well inhomogeneity is nonmonotonic. The dependence has a minimum and an additional maximum. A theory was constructed to clarify the nature of the maximum. It shows that the transmission of spin waves through the inhomogeneity can be considered as a scattering process and that the additional maximum is a scattering resonance.
引用
收藏
页数:17
相关论文
共 9 条