AVS 52nd International Symposium
    Magnetic Interfaces and Nanostructures Tuesday Sessions
       Session MI-TuA

Invited Paper MI-TuA5
Propagation and Tunneling of Spin Waves through a Magnetic Field Inhomogeneity

Tuesday, November 1, 2005, 3:20 pm, Room 204

Session: Magnetization Dynamics
Presenter: B. Hillebrands, University of Kaiserslautern, Germany
Authors: B. Hillebrands, University of Kaiserslautern, Germany
S.O. Demokritov, University of Muenster, Germany
A.A. Serga, University of Kaiserslautern, Germany
V.E. Demidov, University of Muenster, Germany
M.P. Kostylev, University of Kaiserslautern, Germany
A.N. Slavin, Oakland University
Correspondent: Click to Email
We show experimentally and by numerical simulation, that spin waves propagating in a magnetic film can pass through a region of a magnetic field inhomogeneity, or, alternatively, can be reflected by the region depending on the sign of the inhomogeneous field contribution. If the reflecting region is narrow enough, spin wave tunneling may take place. We investigate the tunneling mechanism and demonstrate that it has a magnetic dipole origin. While travelling through a region of inhomogeneous field, spin waves undergo a phase shift. We show experimental evidence and we discuss that this can be used for designing phase shifters and spin-wave logic elements.