512 citations · 5.2k across the 120 of their papers we have counts for
16 papers · 1 filter
Spin-polarized current oscillations in diluted magnetic semiconductor multiple quantum wells
Manuel Bejar, David Sanchez, Gloria Platero +1
We study the spin and charge dynamics of electrons in n-doped II--VI semiconductor multiple quantum wells when one or more quantum wells are doped with Mn. The interplay between st…
Field-domain spintronics in magnetic semiconductor multiple quantum wells
David Sanchez, A. H. MacDonald, Gloria Platero
We develop a theory of non-linear growth direction transport in magnetically doped II-VI compound semiconductor multiple-quantum-well systems. We find that the formation of electri…
Photoassisted dynamical transport in multiple quantum wells
Rosa Lopez, David Sanchez, Gloria Platero
We study the dynamical transport in weakly coupled superlattices in the presence of intense radiation in the THz regime. We derive a general model for the time dependent tunneling…
Temperature dependence of current self-oscillations and electric field domains in sequential tunneling doped superlattices
David Sanchez, L. L. Bonilla, G. Platero
We examine how the current--voltage characteristics of a doped weakly coupled superlattice depends on temperature. The drift velocity of a discrete drift model of sequential tunnel…
Quasiperiodic time dependent current in driven superlattices: distorted Poincare maps and strange attractors
David Sanchez, Gloria Platero, Luis L. Bonilla
Intriguing routes to chaos have been experimentally observed in semiconductor superlattices driven by an ac field. In this work, a theoretical model of time dependent transport in…
Microscopic derivation of transport coefficients and boundary conditions in discrete drift-diffusion models of weakly coupled superlattices
L. L. Bonilla, G. Platero, D. Sanchez
A discrete drift-diffusion model is derived from a microscopic sequential tunneling model of charge transport in weakly coupled superlattices provided temperatures are low or high…
Current self-oscillations, spikes and crossover between charge monopole and dipole waves in semiconductor superlattices
David Sanchez, Miguel Moscoso, Luis L. Bonilla +2
Self-sustained current oscillations in weakly-coupled superlattices are studied by means of a self-consistent microscopic model of sequential tunneling including boundary condition…
Magnetic Field Induced Charge Instabilities in Weakly Coupled Superlattices
R. Aguado, G. Platero
Using a time dependent selfconsistent model for vertical sequential tunneling,we study the appearance of charge instabilities that lead to the formation of electric field domains i…
Photon Assisted Electric Field Domains in Semiconductor Doped Superlattices
R. Aguado, G. Platero
We study photon-assisted tunneling (PAT) through weakly-coupled doped semiconductor superlattices (SL's) in the high voltage regime. A self-consistent model which treats the Coulom…
Microscopic Model for Sequential Tunneling in Semiconductor Multiple Quantum Wells
Ramon Aguado, Gloria Platero, Miguel Moscoso +1
We propose a selfconsistent microscopic model of vertical sequential tunneling through a multi-quantum well.The model includes a detailed description of the contacts,uses the Trans…
Electron-Photon interaction in resonant tunneling diodes
Jesus Inarrea, Ramon Aguado, Gloria Platero
We develope a model to describe the transmission coefficient and tunneling current in the presence of photon-electron coupling in a resonant diode. Our model takes into account mul…
Dynamical Localization and Absolute Negative Conductance in an ac driven double quantum well
Ramon Aguado, Gloria Platero
We analyze the I-V characteristic of a double quantum well integrated in an antenna and driven by THz radiation.We propose a microscopic model to calculate the sequential current i…
Coherent resonant tunneling in ac fields
R. Aguado, J. Inarrea, G. Platero
We have analyzed the tunneling transmission probability and electronic current density through resonant heterostructures in the presence of an external electromagnetic field. In th…
Photoassisted sequential resonant tunneling through superlattices
Jesus Inarrea, Gloria Platero
We have analyzed theoretically the photoassisted tunneling current through a superlattice in the presence of an AC potential. For that purpose we have developed a new model to calc…
Magnetotunneling through a double barrier structure assisted by light
Jesus Inarrea, Gloria Platero
We have analyzed theoretically the effect of a laser on the tunneling current through a double barrier in the presence of a parallel magnetic field. The mag netotunneling current i…
Coherent and sequential photoassisted tunneling through a semiconductor double barrier structure
J. Inarrea, G. Platero, C. Tejedor
We have studied the problem of coherent and sequential tunneling through a double barrier structure, assisted by light considered to be present All over the structure, i,e emitter,…