22 citations · 81 across the 8 of their papers we have counts for
8 papers
The Influence of Morphology on the Charge Transport in Two-Phase Disordered Organic Systems
Cristiano F. Woellner, Leonardo D. Machado, Pedro A. S. Autreto +2
In this work we use a three-dimensional Pauli master equation to investigate the charge carrier mobility of a two-phase system, which can mimic donor-acceptor and amorphous- crysta…
Grading effects in semiconductor nanowires with longitudinal heterostructures
Andrey Chaves, J. A. K. Freire, G. A. Farias
The role of graded interfaces between materials in a cylindrical free-standing quantum wire with longitudinal heterostructures is theoretically investigated, by solving the Schrödi…
Deppining of a Superfluid Vortex Inside a Circular Defect
Jose A. Freire
In this work we study the process of depinning of a quantum of circulation trapped inside a disk by an applied two dimensional superflow. We use the Gross-Pitaevskii model to descr…
Exciton trapping in magnetic wire structures
J. A. K. Freire, F. M. Peeters, V. N. Freire +1
The lateral magnetic confinement of quasi two-dimensional excitons into wire like structures is studied. Spin effects are take into account and two different magnetic field profile…
Fine structure of excitons in a quantum well in the presence of a nonhomogeneous magnetic field
J. A. K. Freire, F. M. Peeters, A. Matulis +2
The trapping of excitons in a semiconductor quantum well due to a circular symmetric nonhomogeneous magnetic field is studied. The effect of the spin state of the exciton on its tr…
Confinement of two-dimensional excitons in a non-homogeneous magnetic field
J. A. K. Freire, A. Matulis, F. M. Peeters +2
The effective Hamiltonian describing the motion of an exciton in an external non-homogeneous magnetic field is derived. The magnetic field plays the role of an effective potential…