Buscar
Mostrando ítems 1-10 de 24
Magnetically driven lattice instabilities
(1989)
The spin-lattice interaction, which very recent experiments suggest is significant in the layered perovskites, is modeled by adding to the coupling constant of the anisotropic Heisenberg antiferromagnet a linear dependence ...
Compactification tuning for nonlinear localized modes in sawtooth lattices
(Amer Physical Soc, 2015)
We discuss the properties of nonlinear localized modes in sawtooth lattices, in the framework of a discrete nonlinear Schrodinger modelwith general on-site nonlinearity. Analytic conditions for existence of exact compact ...
Observation of dipolar transport in one-dimensional photonic lattices
(Elsevier, 2017)
We experimentally study the transport properties of dipolar and fundamental modes on one dimensional (1D) coupled waveguide arrays. By carefully modulating a wide optical beam, we are able to effectively excite dipolar or ...
Rogue waves in disordered 1D photonic lattices
(Nature, 2020)
In this work, we study the phenomena of Rogue waves (RW) on one-dimensional (1D) photonic lattices presenting diagonal and non-diagonal disorder. Our results show the appearance of extreme events coming from the superposition ...
Interplay of disorder and PT symmetry in one-dimensional optical lattices
(American Physical Society, 2015)
We study a one-dimensional binary optical lattice in the presence of diagonal disorder and alternating gain
and loss, and examine the light transport phenomena for localized and extended input beams. In the pure
PT ...
Topological and flat-band states induced by hybridized linear interactions in one-dimensional photonic lattices
(American Physical Society (APS), 2020)
We report on a study of a one-dimensional linear photonic lattice hosting, simultaneously, fundamental and dipolar modes at every site. We show how, thanks to the coupling between different orbital modes, this minimal model ...
Boundary-induced Anderson localization in photonic lattices
(2011)
We analyze numerically localization of light in linear square waveguide arrays restricted in one dimension ("ribbons"), whose boundaries are disordered in propagation constant and/or coupling. We find that the disordered ...
Surface solitons in quasiperiodic nonlinear photonic lattices
(AMER PHYSICAL SOC, 2012-01-04)
We study discrete surface solitons in semi-infinite, one-dimensional, nonlinear (Kerr), quasiperiodic waveguide arrays of the Fibonacci and Aubry-Andre types, and explore different families of localized surface modes, as ...
A GPU enhanced approach to identify atomic vacancies in solid materials
(Elsevier, 2015)
Identification of vacancies in atomic structures plays a crucial role in the characterization of a material, from structural to dynamical properties. In this work we introduce a computationally improved vacancy recognition ...
Run-and-tumble dynamics in a crowded environment: Persistent exclusion process for swimmers
(American Physical Society, 2014)
The effect of crowding on the run-and-tumble dynamics of swimmers such as bacteria is studied using a
discrete lattice model of mutually excluding particles that move with constant velocity along a direction that ...