Seltrapping in flat band lattices with nonlinear disorder
Author
dc.contributor.author
Rivas Arancibia, Danilo
Author
dc.contributor.author
Molina Gálvez, Mario
Admission date
dc.date.accessioned
2020-11-27T14:43:27Z
Available date
dc.date.available
2020-11-27T14:43:27Z
Publication date
dc.date.issued
2020
Cita de ítem
dc.identifier.citation
Scientific Reports (2020) 10:5229
es_ES
Identifier
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10.1038/s41598-020-62079-8
Identifier
dc.identifier.uri
https://repositorio.uchile.cl/handle/2250/177912
Abstract
dc.description.abstract
We study the transport properties of an initially localized excitation in several flat band lattices, in the presence of nonlinear (Kerr) disorder. In the weak nonlinearity regime, the dynamics is controlled by the degeneracy of the bands leading to a linear form of selftrapping. In the strong nonlinearity regime, the dynamics of the excitations depends strongly on the local environment around the initial excitation site that leads to a highly fluctuating selfrapping profile. For a binary nonlinear disorder, it is shown that the spreading of the flat band fundamental mode, is completely inhibited for a finite fraction of all cases. This fraction corresponds to the fraction of times the same value of (random) nonlinearity is assigned to all sites of the fundamental mode.