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Seltrapping in flat band lattices with nonlinear disorder
(Nature, 2020)
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 ...
Seltrapping in flat band lattices with nonlinear disorder
(Nature, 2020)
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 ...
Self-trapping transition for a nonlinear impurity within a linear chain
(American Institute of Physics Inc., 2014)
© 2014 AIP Publishing LLC.In the present work, we revisit the issue of the self-trapping dynamical transition at a nonlinear impurity embedded in an otherwise linear lattice. For our Schrödinger chain example, we present ...
The fractional nonlinear PT dimer
(Nature, 2021)
We examine a fractional discrete nonlinear Schrodinger dimer, where the usual first-order derivative in the time evolution is replaced by a non integer-order derivative. The dimer is nonlinear (Kerr) and PT-symmetric, and ...
Asymmetric counter propagation of domain walls
(Elsevier, 2016)
Far from equilibrium systems show different states and domain walls between them. These walls, depending on the type of connected equilibria, exhibit a rich spatiotemporal dynamics. Here, we investigate the asymmetrical ...
Identification of nonlinear dynamic coefficients in plain journal bearings
(ELSEVIER, 2008-08-02)
This work proposes a framework to the numerical identification of nonlinear fluid film bearing parameters from large journal orbital motion (20-60% of the bearing clearance). Nonlinear coefficients are defined by a third ...
Universal features of self-trapping in nonlinear tight-binding lattices
(2000)
We use the discrete nonlinear Schrödinger (DNLS) equation to show that nonlinear tight-binding lattices of different geometries and dimensionalities display a universal self-trapping behavior. First, we consider the problem ...
Alternating superlattice textures in driven nanomagnets
(Elsevier, 2017)
Nanomagnets driven with uniform electric currents exhibit a wide variety of spatial textures. In the present work, we investigate alternating superlattice states in nanomagnets, which are spatially periodic textures composed ...
Chaotic patterns and localized states in spin valves
(Elsevier B.V., 2019)
© 2019 Elsevier B.V. Driven nano-magnets have attracted increasing attention due to their potential applications and complex dynamical behavior. Spin valves are possibly the most studied driven nano-magnets because applied ...
The magnetoinductive dimer
(2013)
In this paper, we examine a nonlinear magnetoinductive dimer and compute its linear and nonlinear symmetric, antisymmetric and asymmetric modes in closed-form, in the rotating-wave approximation. A linear stability analysis ...