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The non-equilibrium Greens function (NEGF) formalism provides a powerful conceptual and computational framework for treating quantum transport in nanodevices. It goes beyond the Landauer approach for ballistic, non-interacting electronics to include inelastic scattering and strong correlation effects at an atomistic level.
Check out Supriyo Datta's NEGF page for more information, or browse through the various resources listed below.
Nanoelectronic Modeling: Multimillion Atom Simulations, Transport, and HPC Scaling to 23,000 Processors
5.0 out of 5 stars
07 Mar 2008 | Online Presentations | Contributor(s): Gerhard Klimeck
Future field effect transistors will be on the same length scales as “esoteric” devices such as quantum dots,
nanowires, ultra-scaled quantum wells, and resonant tunneling diodes. In those...
MCW07 Physics of Contact Induced Current Asymmetry in Transport Through Molecules
0.0 out of 5 stars
25 Feb 2008 | Online Presentations | Contributor(s): Bhaskaran Muralidharan, Owen D. Miller, Neeti Kapur, Avik Ghosh, Supriyo Datta
We first outline the qualitatively different physics involved in the charging-induced current asymmetries in molecular conductors operating in the strongly coupled (weakly interacting)...
Exploring Physical and Chemical control of molecular conductance: A computational study
01 Feb 2008 | Online Presentations | Contributor(s): Barry D. Dunietz
Can numerical “experiments” INSPIRE physical experiments?
20 Dec 2007 | Online Presentations | Contributor(s): Supriyo Datta
This presentation was one of 13 presentations in the one-day forum,
"Excellence in Computer Simulation," which brought together a broad
set of experts to reflect on the future of...
Engineering at the nanometer scale: Is it a new material or a new device?
06 Nov 2007 | Online Presentations | Contributor(s): Gerhard Klimeck
This seminar will overview NEMO 3D simulation capabilities and its deployment on the nanoHUB as well as an overview of the nanoHUB impact on the community.
MCW07 Modeling Molecule-Assisted Transport in Nanotransistors
06 Nov 2007 | Online Presentations | Contributor(s): Kamil Walczak
Molecular electronics faces many problems in practical device implementation, due to difficulties with fabrication and gate-ability. In these devices, molecules act as the main conducting channel....
MCW07 Simple Models for Molecular Transport Junctions
13 Sep 2007 | Online Presentations | Contributor(s): Misha Galperin, Abraham Nitzan, Mark A. Ratner
We review our recent research on role of interactions in molecular transport junctions. We consider simple models within nonequilibrium Green function approach (NEGF) in steady-state regime.
MCW07 Modeling Charging-based Switching in Molecular Transport Junctions
05 Sep 2007 | Online Presentations | Contributor(s): Sina Yeganeh, Misha Galperin, Mark A. Ratner
We will discuss several proposed explanations for the switching and negative differential resistance behavior seen in some molecular junctions. It is shown that a proposed polaron model is...
BNC Annual Research Symposium: Nanoscale Energy Conversion
23 Apr 2007 | Online Presentations | Contributor(s): Timothy S Fisher
This presentation is part of a collection of presentations describing the projects, people, and capabilities enhanced by research performed in the Birck Center, and a look at plans for the...
Highly Efficient Thermal Transport: The Application of Carbon Nanotube Array Interfaces
4.0 out of 5 stars
01 Feb 2007 | Online Presentations | Contributor(s): Baratunde A. Cola
Carbon nanotubes (CNTs) have received much attention in recent years for their extraordinary properties that through careful engineering may be leverage for the development of numerous...
McCoy Lecture: Nanodevices and Maxwell's Demon
08 Dec 2006 | Online Presentations | Contributor(s): Supriyo Datta
This is a video taped live lecture covering roughly the same material as lecture 1 of "Concepts of Quantum Transport". Video only.
CQT Lecture 4: Coulomb blockade and Fock space
To illustrate the limitations of the model
described in Lectures 2, 3 and introduce a completely different approach based on
the concept of Fock space.
I believe this will be a...
CQT Lecture 3: Probabilities, Wavefunctions and Green Functions
Objective: To extend the simple model from Lecture 2
into the full-blown model combines the NEGF (Non-Equilibrium
Green Function) method with the Landauer approach.
CQT Lecture 2: Electrical Resistance - A Simple Model
To introduce a simple quantitative
model for describing current flow in nanoscalestructures and relate it to
well-known large scale properties like Ohm’s Law.
CQT Lecture 1: Nanodevices and Maxwell's Demon
Objective: To illustrate the subtle interplay of
dynamics and thermodynamicsthat distinguishes transport physics.
A short overview of this series of four lectures is given.
Understanding Phonon Dynamics via 1D Atomic Chains
28 Aug 2006 | Online Presentations | Contributor(s): Timothy S Fisher
Phonons are the principal carriers of thermal energy in semiconductors and insulators, and they serve a vital role in dissipating heat produced by scattered electrons in semiconductor devices....
Exploring Electron Transfer with Density Functional Theory
03 Jul 2006 | Online Presentations | Contributor(s): Troy Van Voorhis
This talk will highlight several illustrative applications of constrained density functional
theory (DFT) to electron transfer dynamics in electronic materials. The kinetics of these
NanoMOS 3.0: First-Time User Guide
06 Jun 2006 | Online Presentations | Contributor(s): Kurtis Cantley, Mark Lundstrom
This tutorial is an introduction to the nanoMOS simulation tool for new users. Descriptions of input and output parameters are included, along with new features associated with the Rappture...
Logic Devices and Circuits on Carbon Nanotubes
23 May 2006 | Online Presentations | Contributor(s): Joerg Appenzeller
Over the last years carbon nanotubes (CNs) have attracted an increasing interest as building blocks for nano-electronics applications. Due to their unique properties enabling e.g. ballistic...