Tunneling of Dipolar Spin Waves through a Region of Inhomogeneous Magnetic Field

Fachbereich Physik and Focschungsschwerpunkt MINAS, Technische Universität Kaiserslautern, 67663 Kaiserslautern, Germany.
Physical Review Letters (Impact Factor: 7.51). 08/2004; 93(4):047201. DOI: 10.1103/PhysRevLett.93.047201
Source: PubMed


The effect of a spin-wave tunnelling in an inhomogeneous magnetic field and the theoretical analysis of the spin-wave reflection was investigated. It was observed that the magnetic dipole interaction determined the properties of spin waves where the character of the magnetic dipole interaction was nonlocal. The spin waves propagating in a magnetic film could pass through a region of a magnetic field inhomogeneity and these were shown by numerical simulations and experiments. The tunnelling mechanisms were observed and it was demonstrated that it had a magnetic dipole origin.

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