7 papers
On the low-temperature diffusion of localized Frenkel excitons in linear molecular aggregates
A. V. Malyshev, V. A. Malyshev, F. Dominguez-Adame
We study theoretically diffusion of one-dimensional Frenkel excitons in J-aggregates at temperatures that are smaller or of the order of the J-band width. We consider an aggregate…
Anderson transition in low-dimensional disordered systems driven by nonrandom long-range hopping
A. Rodriguez, V. A. Malyshev, G. Sierra +3
The single-parameter scaling hypothesis predicts the absence of delocalized states for noninteracting quasiparticles in low-dimensional disordered systems. We show analytically and…
Absence of weak localization in two-dimensional disordered Frenkel lattices
A. Rodriguez, M. A. Martin-Delgado, J. Rodriguez-Laguna +4
The standard one-parameter scaling theory predicts that all eigenstates in two-dimensional random lattices are weakly localized. We show that this claim fails in two-dimensional di…
Electron scattering on disordered double barrier GaAs-AlGaAs heterostructures
I. Gomez, E. Diez, F. Dominguez-Adame +1
We present a novel model to calculate vertical transport properties such as conductance and current in unintentionally disordered double barrier GaAs-AlGaAs heterostruc…
A simple model for the metal-insulator transition in a two-dimensional electron gas
J. C. Flores, V. Bellani, F. Dominguez-Adame
We introduce an elementary model for the electrostatic self-consistent potential in a two-dimensional electron gas. By considering the perpendicular degree of freedom arising from…
Transport properties of nonlinear double-barrier structures
E. Diez, A. Sanchez, F. Dominguez-Adame
We introduce a solvable model of a nonlinear double-barrier structure, described by a generalized effective-mass equation with a nonlinear coupling term. This model is interesting…