Dipole-exchange spin waves in Fibonacci magnetic multilayers

Details Dipole-exchange spin waves in Fibonacci magnetic multilayers Dipole-exchange spin waves in Fibonacci magnetic multilayers

2005-03-29

arxiv.org/abs/cond-mat/0503683v1

Physics Letters A 344, 71 (2005)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

5 pages, 5 figures

Scientific paper

10.1016/j.physleta.2005.06.042

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.

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