L. L. Bonilla

chapter

Chaotic Motion of Space Charge Monopole Waves in Semiconductors Under Time-Independent Voltage Bias

I. R. Cantalapiedra, M. J. Bergmann, S. W. Teitsworth, L. L. Bonilla

Lecture Notes in Physics > Statistical and Dynamical Aspects of Mesoscopic Systems > Contributions Presented as Posters > 329-329

A standard drift-diffusion model of space charge wave propagation in semiconductors has been studied numerically and analytically under dc voltage bias. For sufficiently long samples and appropriate voltage bias - such that the sample is biased in a regime of negative differential resistance - we find period doubling and chaos in the propagation of nonlinear fronts (charge monopoles of alternating...

chapter

An Explanation for Spikes in Current Oscillations of Doped Superlattices

A. Perales, M. Moscoso, L. L. Bonilla

Lecture Notes in Physics > Statistical and Dynamical Aspects of Mesoscopic Systems > Contributions Presented as Posters > 347-348

The current oscillations in semiconductor superlattices under domain formation, which are due to a recycling of the domain boundary, contain additional spikes of much higher frequency than the fundamental oscillations. While the recycling of the domain boundary covers a larger number of periods of the superlattice, these spikes are due to a relocation of the domain boundary, which is a charge monopole,...

chapter

Non-Linear Charge Dynamics in Semiconductor Superlattices

D. Sánchez, M. Moscoso, R. Aguado, G. Platero, more

Lecture Notes in Physics > Statistical and Dynamical Aspects of Mesoscopic Systems > Contributions Presented as Posters > 334-335

In the last few years, vertical transport in n-doped weakly coupled semiconductor superlattices has been shown to exhibit non-linear phenomena such as domain formation, multistability, self-sustained current oscillations, and driven and undriven chaos [1]. The most succesful theoretical models combine discrete rate equations for the carrier density and the electric field in the different wells, and...

chapter

Electric field domains in superlattices: Dynamics

L. L. Bonilla, J. A. Cuesta, J. Galdál, F. C. Martinez, more

Lecture Notes in Physics > 25 Years of Non-Equilibrium Statistical Mechanics > 327-337

chapter

Two-Dimensional Gunn Effect

L. L. Bonilla, R. Escobedo, F. J. Higuera

Lecture Notes in Physics > Statistical and Dynamical Aspects of Mesoscopic Systems > Contributions Presented as Posters > 346-346

Current self-oscillations in semiconductors with a region of negative differential resistivity in their current-field characteristic are known since J. B. Gunn’s early experiments on n-GaAs samples in 1963. Most studied are Gunn self- oscillations in one-dimensional spatial configurations which appear when planar contacts are placed in bulk semiconductor samples: during each period of the current...

chapter

Electron Patterns Under Bistable Electro-Optical Absorption in Quantum Well Structures

C. A. Velasco, L. L. Bonilla, V. A. Kochelap, V. N. Sokolov

Lecture Notes in Physics > Statistical and Dynamical Aspects of Mesoscopic Systems > Contributions Presented as Posters > 325-326

Heterostructures with electrically biased quantum wells show bistable absorption in both, hybrid electro-optical devices (SEED’s) [1] and all-optical devices (wireless SEED’s [2], and multiple quantum well structures [3],[4]). We report a new phenomenon of formation of transversal electron patterns under bistable electro-optical absorption in wireless single and multiple quantum well heterostructures...

chapter

Theory of Surface Deposition from Boundary Layers Containing Condensable Vapor and Particles

J. C. Neu, A. Carpio, L. L. Bonilla

The European Consortium for Mathematics in Industry > Progress in Industrial Mathematics at ECMI 2008 > Minisymposia > 469-474

Summary Hot gas containing condensible vapor and small particles “blows” against a “cold” wall. The model computes the rate at which liquefied vapor accumulates on the wall due to direct condensation plus a “rain” of liquid-covered particles. The latter results from heterogeneous nucleation in undercooled vapor near the wall.

chapter

Minisymposium Charge and Spin Transport in Nanostructures

L. L. Bonilla, M. Carretero

The European Consortium for Mathematics in Industry > Progress in Industrial Mathematics at ECMI 2008 > Minisymposia > 133-134

Electronic transport is the basis of many nanotechnology applications. Spin transport and spintronics are used to create better computer memories, whereas basic science and many interesting device applications are being actively pursued. In nanoelectronic devices, the interplay between charge, spin and vibrational degrees of freedom determines their main electronic and transport features. Moreover,...

chapter

Minisymposium Precipitation, Deposition and Sedimentation of Particles in Fluid Flow

L. L. Bonilla, Y. Farjoun

The European Consortium for Mathematics in Industry > Progress in Industrial Mathematics at ECMI 2008 > Minisymposia > 453-454

In many industrial processes, particles transported by gas flows may deposit on confining walls due to different mechanisms. Often times, heterogeneous condensation of vapors on particles transported by the flow or homogeneous condensation of vapors occurs and the resulting droplets move towards cold walls. The inertia of larger particles carried by turbulent flows may also be important in deposition...

chapter

Self-Sustained Spin-Polarized Current Oscillations in Multiquantum Well Structures

M. Carretero, L. L. Bonilla, R. Escobedo, G. Platero

The European Consortium for Mathematics in Industry > Progress in Industrial Mathematics at ECMI 2008 > Minisymposia > 147-152

Summary A semiconductor multiquantum well structure exhibits self-sustained spin-polarized current oscillations if one or more of its wells are doped with Mn. Analysis and numerical solution of a nonlinear spin transport model yield the minimal number of wells and the range of doping density needed to find oscillations.

chapter

Nonlinear Electron and Spin Transport in Semiconductor Superlattices

L. L. Bonilla, L. Barletti, M. Alvaro

The European Consortium for Mathematics in Industry > Progress in Industrial Mathematics at ECMI 2008 > Minisymposia > 141-146

Summary Nonlinear charge transport in strongly coupled semiconductor super lattices is described by two-miniband Wigner-Poisson kinetic equations with BGK collision terms. The hyperbolic limit, in which the collision frequencies are of the same order as the Bloch frequencies due to the electric field, is investigated by means of the Chapman-Enskog perturbation technique, leading to nonlinear drift-diffusion...

chapter

Relocation Dynamics During Voltage Switching in Spin-Polarized Superlattices

R. Escobedo, M. Carretero, L. L. Bonilla, G. Platero

The European Consortium for Mathematics in Industry > Progress in Industrial Mathematics at ECMI 2008 > Minisymposia > 159-165

Summary A numerical study of domain wall relocation during voltage switching in a semiconductor device whose current-voltage characteristic exhibits the alternation of intervals of stationary states with intervals of oscillatory states is presented. Voltage switching between voltage intervals always induces the emission of a relocation wave, but relocation can be permanent or not depending on the...

chapter

Homogeneous Branched-Chain Explosions

M. Carretero, L. L. Bonilla, J. B. Keller

The European Consortium for Mathematics in Industry > Progress in Industrial Mathematics at ECMI 2008 > Contributed Papers > 759-764

Summary A model of homogeneous explosions due to Kapila is analyzed by singular perturbation methods. The results are compared with those obtained by the method of self-adjusting multiple scales.

article

Theory of defect dynamics in graphene: defect groupings and their stability

L. L. Bonilla, A. Carpio

Continuum Mechanics and Thermodynamics > 2011 > 23 > 4 > 337-346

We use our theory of periodized discrete elasticity to characterize defects in graphene as the cores of dislocations or groups of dislocations. Earlier numerical implementations of the theory predicted some of the simpler defect groupings observed in subsequent Transmission Electron Microscope experiments. Here, we derive the more complicated defect groupings of three or four defect pairs from our...

article

Forcing of chaos in semiconductor superlattices

L. L. Bonilla, O. M. Bulashenko

Superlattices and Microstructures > 1998 > 23 > 1 > 13-17

The chaotic behavior of high-field transport in weakly-coupled narrow-miniband GaAs/AlAs superlattices (SL) under ac+dc biases has been numerically studied within a self-consistent discrete model. It is shown that the regions of entrainment and quasiperiodicity form the Arnol'd tongues on the driving frequency-driving amplitude parameter plane. Chaos is demonstrated to appear at the boundaries of...

article

Dynamics of electric-field domains and chaos in semiconductor superlattices

L. L. Bonilla, O. M. Bulashenko, J. Galán, M. Kindelan, more

Solid State Electronics > 1996 > 40 > 1-8 > 161-165

A discrete drift model of sequential resonant tunneling in weakly-coupled doped or undoped GaAs/AlAs superlattices (SL) under d.c. or d.c. + a.c. voltage bias and laser illumination is analyzed. In agreement with experiments our model shows an oscillatory I-V diagram for large enough values of the doping and/or laser illumination, multistability and hysteresis between stationary solutions and self-sustained...

INFONA - science communication portal

Search results for: L. L. Bonilla

Chaotic Motion of Space Charge Monopole Waves in Semiconductors Under Time-Independent Voltage Bias

An Explanation for Spikes in Current Oscillations of Doped Superlattices

Non-Linear Charge Dynamics in Semiconductor Superlattices

Electric field domains in superlattices: Dynamics

Two-Dimensional Gunn Effect

Electron Patterns Under Bistable Electro-Optical Absorption in Quantum Well Structures

Theory of Surface Deposition from Boundary Layers Containing Condensable Vapor and Particles

Minisymposium Charge and Spin Transport in Nanostructures

Minisymposium Precipitation, Deposition and Sedimentation of Particles in Fluid Flow

Self-Sustained Spin-Polarized Current Oscillations in Multiquantum Well Structures

Nonlinear Electron and Spin Transport in Semiconductor Superlattices

Relocation Dynamics During Voltage Switching in Spin-Polarized Superlattices

Homogeneous Branched-Chain Explosions

Theory of defect dynamics in graphene: defect groupings and their stability

Forcing of chaos in semiconductor superlattices

Dynamics of electric-field domains and chaos in semiconductor superlattices

Filter options

Publication date

Content availability

Publication type

Keywords

Data set

Journal

INFONA - science communication portal

Search results for: L. L. Bonilla

Add recipient

Sending message cancelled

Are you sure you want to cancel sending this message?

Send message

Filter options

Publication date

Date range setting

Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.

Content availability

Publication type

Keywords

Data set

Journal

Reporting an error / abuse

Sending the report failed

Accessibility options