Driven localized excitations in the acoustic spectrum of small nonlinear macroscopic and microscopic lattices

M. Sato; A. J. Sievers

doi:10.1103/physrevlett.98.214101

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arXiv · 0704.3789

Driven localized excitations in the acoustic spectrum of small nonlinear macroscopic and microscopic lattices

M. Sato·A. J. Sievers

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Abstract

Both bright and dark traveling, locked, intrinsic localized modes (ILMs) have been generated with a spatially uniform driver at a frequency in the acoustic spectrum of a nonlinear micromechanical cantilever array. Complementary numerical simulations show that a minimum density of modes, hence array size, is required for the formation of such locked smoothly running excitations. Additional simulations on a small 1-D antiferromagnetic spin system are used to illustrate that such uniformly driven running ILMs should be a generic feature of a nanoscale atomic lattice.

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M. Sato, A. J. Sievers. 2007-04-28. Driven localized excitations in the acoustic spectrum of small nonlinear macroscopic and microscopic lattices. https://doi.org/10.1103/physrevlett.98.214101

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