Tunneling of dipolar spin waves through a region of inhomogeneous magnetic field.
We show experimentally and by numerical simulations that spin waves propagating in a magnetic film can pass through a region of a magnetic field inhomogeneity or they can be reflected by the region depending on the sign of the inhomogeneity. If the reflecting region is narrow enough, spin-wave tunneling takes place. We investigate the tunneling mechanism and demonstrate that it has a magnetic dipole origin.
Fachbereich Physik and Focschungsschwerpunkt MINAS, Technische Universität Kaiserslautern, 67663 Kaiserslautern, Germany. demokrit@physik.uni-kl.de
S O
SO
Demokritov
A A
AA
Serga
A
A
André
V E
VE
Demidov
M P
MP
Kostylev
B
B
Hillebrands
A N
AN
Slavin