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Analytical and Numerical Solution of the Double Barrier Problem

28 Jun 2010 | Contributor(s): Gerhard Klimeck, Parijat Sengupta, Dragica Vasileska

Tunneling is fully quantum-mechanical effect that does not have classical analog. Tunneling has revolutionized surface science by its utilization in scanning tunneling microscopes. In some device applications tunneling is required for the operation of the device (Resonant tunneling diodes,...

Bulk Monte Carlo: Implementation Details and Source Codes Download

01 Jun 2010 | Contributor(s): Dragica Vasileska, Stephen M. Goodnick

The Ensemble Monte Carlo technique has been used now for over 30 years as a numerical method to simulate nonequilibrium transport in semiconductor materials and devices, and has been the subject of numerous books and reviews. In application to transport problems, a random walk is generated to...

Reading Material: Esaki Diode

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09 Jul 2008 | Teaching Materials | Contributor(s): Dragica Vasileska

www.eas.asu.edu/~vasileskNSF

Thermal effects

27 Jul 2011 | Teaching Materials | Contributor(s): Dragica Vasileska

This set of lecture notes explains electro-thermal and thermo-electric effects as they occur in semiconductor materials and devices.

From Semi-Classical to Quantum Transport Modeling: Quantum Transport - Recursive Green's function method, CBR approach and Atomistic

09 Aug 2009 | Teaching Materials | Contributor(s): Dragica Vasileska

This set of powerpoint slides series provides insight on what are the tools available for modeling devices that behave either classically or quantum-mechanically. An in-depth description is provided to the approaches with emphasis on the advantages and disadvantages of each approach. Conclusions...

Slides: Time-Dependent Perturbation Theory

10 Jul 2008 | Teaching Materials | Contributor(s): Dragica Vasileska, David K. Ferry

From Semi-Classical to Quantum Transport Modeling: Particle-Based Device Simulations

Harmonic Oscillator: Motion in a Magnetic Field

09 Jul 2008 | Teaching Materials | Contributor(s): Dragica Vasileska, David K. Ferry

Silvaco Athena - Part 2

04 Aug 2011 | Teaching Materials | Contributor(s): Dragica Vasileska

This set of powerpoint slides describes the diffusion and the oxidation process. Also briefly described are etching and epitaxy process.

ACUTE - PN Diode Modeling

07 Jul 2011 | Teaching Materials | Contributor(s): Dragica Vasileska, Gerhard Klimeck

In this assignment, starting from an equilibrium Poisson equation solver for pn-diode, students are required to develop a complete 1D drift-diffusion simulator using the lecture materials provided as part of the ACUTE tool-based curricula.

Electron-Electron Interactions

17 Jun 2011 | Teaching Materials | Contributor(s): Dragica Vasileska

This set of slides describes the electron-electron interactions scattering rates calculations as it occurs in bulk materials, low-dimensional structures and semiconductor devices.

Time-Dependent Perturbation Theory

20 Jul 2010 | Teaching Materials | Contributor(s): David K. Ferry, Dragica Vasileska

This set of slides describes in detail the derivation of Fermi's Golden Rule.

Introduction to process modeling

01 Aug 2011 | Teaching Materials | Contributor(s): Dragica Vasileska, Gerhard Klimeck

This set of slides introduces the students into basic concepts of process modeling.

Multigrid Tutorial

02 Jun 2010 | Teaching Materials | Contributor(s): Dragica Vasileska

This set of slides describe the idea behind the multigrid method and its implementation.

Modeling of Light Emitting Diodes with SILVACO

06 Feb 2011 | Teaching Materials | Contributor(s): Dragica Vasileska

Simulation of LEDs with SILVACO is presented.

Bulk Monte Carlo Code Described

01 Jul 2008 | Teaching Materials | Contributor(s): Dragica Vasileska

In this tutorial we give implementation details for the bulk Monte Carlo code for calculating the electron drift velocity, velocity-field characteristics and average carrier energy in bulk GaAs materials. Identical concepts with minor details apply to the development of a bulk Monte Carlo code...

From Semi-Classical to Quantum Transport Modeling: What is Computational Electronics?

Green's Functions Method Explained

09 Aug 2011 | Teaching Materials | Contributor(s): Dragica Vasileska, Gerhard Klimeck

This is a tutorial on non-equilibrium Green's functions.

Bound States and Open Systems

30 May 2010 | Teaching Materials | Contributor(s): Dragica Vasileska

bound states, open systems, transfer matrix approach, gate leakage calculation in Schottky gates

Reading Material: Tunneling

08 Jul 2008 | Teaching Materials | Contributor(s): Dragica Vasileska

ABACUS Exercise: Bandstructure – Kronig-Penney Model and Tight-Binding Exercise

20 Jul 2010 | Teaching Materials | Contributor(s): Dragica Vasileska, Gerhard Klimeck

The objective of this exercise is to start with the simple Kronig-Penney model and understand formations of bands and gaps in the dispersion relation that describes the motion of carriers in 1D periodic potentials. The second exercise examines the behavior of the bands at the Brillouin zone...

Slides: Harmonic Oscillator - Brute Force Approach

Crystal Structures

04 Jun 2010 | Teaching Materials | Contributor(s): David K. Ferry, Dragica Vasileska, Gerhard Klimeck

In mineralogy and crystallography, a crystal structure is a unique arrangement of atoms in a crystal. A crystal structure is composed of a basis, a set of atoms arranged in a particular way, and a lattice. The basis is located upon the points of a lattice spanned by lattice vectors, which is an...

Basic operation of a PN diode - Theoretical exercise

02 Aug 2008 | Teaching Materials | Contributor(s): Dragica Vasileska, Gerhard Klimeck

These exercises help the students better understand the operation of conventional, p+n and short diode.www.eas.asu.edu/~vasileskNSF

From Semi-Classical to Quantum Transport Modeling: Quantum Transport - Usuki Method and Theoretical Description of Green's Functions