Observation of a Goos-Hanchen-like Phase Shift for Magnetostatic Spin Waves

Stigloher, J. and Taniguchi, T. and Koerner, H. S. and Decker, M. and Moriyama, T. and Ono, T. and Back, C. H. (2018) Observation of a Goos-Hanchen-like Phase Shift for Magnetostatic Spin Waves. PHYSICAL REVIEW LETTERS, 121 (13): 137201. ISSN 0031-9007, 1079-7114

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Abstract

In optics, a light beam experiences a spatial shift in the beam plane upon total internal reflection. This shift is usually referred to as the Goos-Hanchen shift. When dealing with plane waves, it manifests itself as a phase shift between an incoming and reflected wave that depends on the wave vector component along the interface. In the experiments presented here, plane spin waves are excited in a 60-nm-thick Permalloy film and propagate towards the edge of the film. By means of time-resolved scanning Kerr microscopy, we are able to directly detect a phase shift between the incoming and reflected wave. With the help of a numerical model, we show that this phase shift naturally occurs for spin waves in the dipolar regime.

Item Type: Article
Uncontrolled Keywords: FERROMAGNETIC-FILMS;
Subjects: 500 Science > 530 Physics
Divisions: Physics > Institute of Experimental and Applied Physics > Chair Professor Back > Group Christian Back
Depositing User: Dr. Gernot Deinzer
Date Deposited: 12 Dec 2019 13:14
Last Modified: 12 Dec 2019 13:14
URI: https://pred.uni-regensburg.de/id/eprint/13833

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