Spin-wave excitation and propagation in microstructured waveguides of yttrium iron garnet/Pt bilayers

被引：144

作者：

Pirro, P. ^{[1
,2
]}

Braecher, T. ^{[1
,2
,3
]}

Chumak, A. V. ^{[1
,2
]}

Laegel, B. ^{[1
,2
]}

Dubs, C. ^{[4
]}

Surzhenko, O. ^{[4
]}

Goernert, P. ^{[4
]}

Leven, B. ^{[1
,2
]}

Hillebrands, B. ^{[1
,2
]}

机构：

[1] Tech Univ Kaiserslautern, Fachbereich Phys, D-67663 Kaiserslautern, Germany

[2] Tech Univ Kaiserslautern, Landesforschungszentrum OPTIMAS, D-67663 Kaiserslautern, Germany

[3] Grad Sch Mat Sci Mainz, D-67663 Kaiserslautern, Germany

[4] Innovent eV, D-07745 Jena, Germany

来源：

APPLIED PHYSICS LETTERS | 2014年 / 104卷 / 01期

关键词：

FILMS;

D O I：

10.1063/1.4861343

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We present an experimental study of spin-wave excitation and propagation in microstructured waveguides consisting of a 100 nm thick yttrium iron garnet/platinum (Pt) bilayer. The life time of the spin waves is found to be more than an order of magnitude higher than in comparably sized metallic structures, despite the fact that the Pt capping enhances the Gilbert damping. Utilizing microfocus Brillouin light scattering spectroscopy, we reveal the spin-wave mode structure for different excitation frequencies. An exponential spin-wave amplitude decay length of 31 mu m is observed which is a significant step towards low damping, insulator based micro-magnonics. (C) 2014 AIP Publishing LLC.

引用

页数：4

共 28 条

[1] Spin waves in an inhomogeneously magnetized stripe [J].