Work

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

Year: 2014

Type: article

Abstract: 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 μm is observed which is a significant step towards low damping, insulator based micro-magnonics.

Source: Applied Physics Letters

DOI: 10.1063/1.4861343

Authors: P. Pirro, T. Brächer, A. V. Chumak, B. Lägel, C. Dubs, O. Surzhenko, P. Görnert, B. Leven, B. Hillebrands

Institutions: University of Kaiserslautern, Innovent

Language: English

Topic: Magnetic properties of thin films

Subfield: Condensed Matter Physics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: green

OpenAlex ID: W2091334584

FWCI: 10.35

Cites: 27

Cited by: 177

Related to: 10