Fresnel diffraction of spin waves

被引：16

作者：

Loayza, N. ^{[1
]}

Jungfleisch, M. B. ^{[2
,3
]}

Hoffmann, A. ^{[2
]}

Bailleul, M. ^{[4
]}

Vlaminck, V. ^{[1
]}

机构：

[1] Univ San Francisco Quito, Colegio Ciencias & Ingn, Quito, Ecuador

[2] Argonne Natl Lab, Mat Sci Div, Argonne, IL 60439 USA

[3] Univ Delaware, Dept Phys & Astron, Newark, DE 19716 USA

[4] Univ Strasbourg, UMR CNRS 7504, Inst Phys & Chim Mat Strasbourg, 23 Rue Loess,BP 43, F-67034 Strasbourg 2, France

来源：

PHYSICAL REVIEW B | 2018年 / 98卷 / 14期

关键词：

IRON-GARNET FILMS; EXCITATION;

D O I：

10.1103/PhysRevB.98.144430

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The propagation of magnetostatic forward volume waves excited by a constricted coplanar waveguide is studied via inductive spectroscopy techniques. A series of devices consisting of pairs of submicrometer size antennae is used to perform a discrete mapping of the spin wave amplitude in the plane of a 30-nm thin YIG film. We found that the spin wave propagation remains well focused in a beam shape of width comparable to the constriction length and that the amplitude within the constriction displays oscillations, two features which are explained in terms of near-field Fresnel diffraction theory.

引用

页数：7

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