The contrast between defect solitons in parity—time symmetric superlattice and simple-lattice complex potentials
作者： Su-Mei Hu , Wei Hu
DOI: 10.1088/1674-1056/21/2/024212
关键词: Condensed matter physics 、 Superlattice 、 Propagation constant 、 Soliton 、 Parity (physics) 、 Lattice (order) 、 Physics
摘要: The existence and stability of defect superlattice solitons in parity—time (PT) symmetric simple-lattice complex potentials are reported. Compared with similar potentials, the soliton has a wider stable range than that simple-lattice. solitons' power increases increasing propagation constant. For positive defect, whole region where exist semi-infinite gap. zero unstable at edge band. negative propagate shape Y low constant stably large one.
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