Abstract
On a two-dimensional planar parity-time-(-)symmetric nonlinear magnetic metamaterial, consisting of split-ring dimers with balanced gain and loss, discrete breather solutions can be found. We extend these studies and by numerical calculations reveal the existence of further stable, long-lived oscillations, with certain frequencies, in the breather spectrum. We describe these oscillations in terms of an analytical breather theory, and show that they can be interpreted as superpositions of a breather oscillation and a plane wave. We coin the term “hybrid breather” solutions for these solutions.
- Received 30 April 2019
DOI:https://doi.org/10.1103/PhysRevA.100.063826
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