2011/11/10 by Glade Sietsema, Sietsema, Glade, Michael E. Flatté +1
Physics and Astronomy · #FOS: Physical sciences #Materials Science (cond-mat.mtrl-sci) #Other Condensed Matter (cond-mat.other) #cond-mat.mtrl-sci #cond-mat.other
paper · pdf · doi:10.48550/arxiv.1111.2506
19 pages, 11 figures, submitted to Phys. Rev. B
arxiv created 2011/11/10 · arxiv updated 2011/11/11
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.