Article,

Dipole-exchange spin waves in Fibonacci magnetic multilayers

, and .
PHYSICS LETTERS A, 344 (1): 71-76 (2005)
DOI: 10.1016/j.physleta.2005.06.042

Abstract

A microscopic model is employed to calculate the spectrum of spin waves in quasiperiodic magnetic multilayers in the dipole-exchange regime. Results are presented for structures in which thin ferromagnetic films are separated by non-magnetic spacers following a Fibonacci sequence and extend previous magnetostatic calculations. The results show the splitting of the frequency bands and the mode mixing caused by the dipolar interaction between the films as a function of spacer thickness, as well as the fractal aspect of the spectrum induced by the non-periodic aspect of the structure. (c) 2005 Elsevier B.V. All rights reserved.

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