2000 character limit reached
Magnonic band structure of a two-dimensional magnetic superlattice (1111.2506v1)
Published 10 Nov 2011 in cond-mat.mtrl-sci and cond-mat.other
Abstract: The frequencies and linewidths of spin waves in a two-dimensional periodic superlattice of magnetic materials are found, using the Landau-Lifshitz-Gilbert equations. The form of the exchange field from a surface-torque-free boundary between magnetic materials is derived, and magnetic-material combinations are identified which produce gaps in the magnonic spectrum across the entire superlattice Brillouin zone for hexagonal and square-symmetry superlattices.
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