46 citations · 119 across the 10 of their papers we have counts for
10 papers
Towards an effective mass model for the quasi-1D magnesium diboride superconducting nanostructures
Wojciech Julian Pasek, Marcos H. Degani, Marcio C. de Andrade +1
We developed a parabolic effective mass model with the aim to describe the in-plane constricted superconductivity in few-monolayer MgB. The model was employed to study a constr…
Optimal control of universal quantum gates in a double quantum dot
Leonardo K. Castelano, Emanuel F. de Lima, Justino R. Madureira +2
We theoretically investigate electron spin operations driven by applied electric fields in a semiconductor double quantum dot (DQD). Our model describes a DQD formed in semiconduct…
Application of the Landau-Zener-Stueckelberg-Majorana dynamics in an electrically driven flip of a hole spin
Wojciech Julian Pasek, Marcelo Zoega Maialle, Marcos Henrique Degani
An idea of employing the Landau-Zener-Stückelberg-Majorana (LZSM) dynamics to flip a spin of a single ground state hole is introduced and explored by a time-dependent simulation. T…
The Role of Multilevel Landau-Zener Interference in Extreme Harmonic Generation
J. Stehlik, M. Z. Maialle, M. H. Degani +1
Motivated by the observation of multiphoton electric dipole spin resonance processes in InAs nanowires, we theoretically study the transport dynamics of a periodically driven five-…
Dielectric mismatch and shallow donor impurities in GaN/HfO2 quantum wells
T. A. S. Pereira, A. A. Sousa, M. H. Degani +1
In this work we investigate electron-impurity binding energy in GaN/HfO quantum wells. The calculation considers simultaneously all energy contributions caused by the dielectri…
Extreme Harmonic Generation in Electrically Driven Spin Resonance
J. Stehlik, M. D. Schroer, M. Z. Maialle +2
We report the observation of multiple harmonic generation in electric dipole spin resonance in an InAs nanowire double quantum dot. The harmonics display a remarkable detuning depe…
Eccentricity effects on the quantum confinement in double quantum rings
J. Costa e Silva, Andrey Chaves, G. A. Farias +2
This work presents a theoretical study of the energy spectrum of GaAs/AlGaAs concentric double quantum rings, under an applied magnetic field directed perpendicular to the ring pla…
Negative photoconductance in a biased multiquantum well with filter barriers
Anibal T. Bezerra, Marcelo Z. Maialle, Marcos H. Degani +2
In this paper the photon-assisted electron motion in a multiquantum well (MQW) semiconductor heterostructure in the presence of an electric field is investigated. The time-dependen…
Generation and control of spin-polarized photocurrents in GaMnAs heterostructures
Anibal T. Bezerra, Leonardo K. Castelano, Marcos H. Degani +3
Photocurrents are calculated for a specially designed GaMnAs semiconductor heterostructure. The results reveal regions in the infrared range of the energy spectrum in which the pro…
Terahertz-field induced tunneling current with non-linear effects in a double quantum well coupled to a continuum
Marcelo Z. Maialle, Marcos H. Degani, Justino R. Madureira +1
We have theoretically investigated the tunneling current induced by a terahertz (THz) field applied to an asymmetric double quantum well. The excitation couples an initially locali…