
Nanoelectronics and the Meaning of Resistance
20 Aug 2008   Contributor(s):: Supriyo Datta
The purpose of this series of lectures is to introduce the "bottomup" approach to nanoelectronics using concrete examples. No prior knowledge of quantum mechanics or statistical mechanics is assumed; however, familiarity with matrix algebra will be helpful for some topics. Day 1: What...

ABACUS  Assembly of Basic Applications for Coordinated Understanding of Semiconductors
16 Jul 2008   Contributor(s):: Xufeng Wang, Dragica Vasileska, Gerhard Klimeck
Onestopshop for teaching semiconductor device education

PieceWise Constant Potential Barriers Tool
30 Jun 2008   Contributor(s):: Xufeng Wang, Samarth Agarwal, Gerhard Klimeck, Dragica Vasileska, Mathieu Luisier, Jean Michel D Sellier
Transmission and the reflection coefficient of a five, seven, nine, eleven and 2nsegment piecewise constant potential energy profile

Nano Carbon: From ballistic transistors to atomic drumheads
14 May 2008   Contributor(s):: Paul L. McEuen
Carbon takes many forms, from precious diamonds to lowly graphite. Surprisingly, it is the latter that is the most prized by nano physicists. Graphene, a single layer of graphite, can serve as an impenetrable membrane a single atom thick. Rolled up into a nanometerdiameter cylindera carbon...

Matdcal
30 Jan 2008   Contributor(s):: Kirk Bevan
Nonequilibrium Green's Function Density Functional Theory Simulator

Introduction to Coulomb Blockade Lab
31 Mar 2008   Contributor(s):: Bhaskaran Muralidharan, Xufeng Wang, Gerhard Klimeck
The tutorial is based on the Coulomb Blockade Lab available online at Coulomb Blockade Lab. Students are introduced to the concepts of level broadening and charging energies in artificial atoms (single quantum dots) and molecules (coupled quantum dots).A tutorial level introduction to the...

Coulomb Blockade Simulation
05 Jul 2006   Contributor(s):: Xufeng Wang, Bhaskaran Muralidharan, Gerhard Klimeck
Simulate Coulomb Blockade through ManyBody Calculations in a single and double quantum dot system

Nanoelectronic Modeling: Multimillion Atom Simulations, Transport, and HPC Scaling to 23,000 Processors
07 Mar 2008   Contributor(s):: Gerhard Klimeck
Future field effect transistors will be on the same length scales as “esoteric” devices such as quantum dots, nanowires, ultrascaled quantum wells, and resonant tunneling diodes. In those structures the behavior of carriers and their interaction with their environment need to be fundamentally...

MCW07 A Quantum Open Systems Approach to MolecularScale Devices
25 Feb 2008   Contributor(s):: Yongqiang Xue
Experimental advances in electrically and optically probing individual molecules have provided new insights into the behavior of single quantum objects and their interaction with the nanoenvironments without requiring ensemble average. Molecularscale devices are open quantum systems whose...

MCW07 Physics of Contact Induced Current Asymmetry in Transport Through Molecules
25 Feb 2008   Contributor(s):: Bhaskaran Muralidharan, owen miller, Neeti Kapur, Avik Ghosh, Supriyo Datta
We first outline the qualitatively different physics involved in the charginginduced current asymmetries in molecular conductors operating in the strongly coupled (weakly interacting) selfconsistent field (SCF) and the weakly coupled (strongly interacting) Coulomb Blockade (CB) regimes. The CB...

Exploring Physical and Chemical control of molecular conductance: A computational study
31 Jan 2008   Contributor(s):: Barry D. Dunietz

Path Integral Monte Carlo
13 Dec 2007   Contributor(s):: John Shumway, Matthew Gilbert
Tool Description

Application of the Keldysh Formalism to Quantum Device Modeling and Analysis
14 Jan 2008   Contributor(s):: Roger Lake
The effect of inelastic scattering on quantum electron transport through layered semiconductor structures is studied numerically using the approach based on the nonequilibrium Green's function formalism of Keldysh, Kadanoff, and Baym. The Markov assumption is not made, and the energy coordinate...

ElectronPhonon and ElectronElectron Interactions in Quantum Transport
14 Jan 2008   Contributor(s):: Gerhard Klimeck
The objective of this work is to shed light on electron transport through submicron semiconductor structures, where electronic state quantization, electronelectron interactions and electronphonon interactions are important. We concentrate here on the most developed vertical quantum device,...

Can numerical “experiments” INSPIRE physical experiments?
20 Dec 2007   Contributor(s):: Supriyo Datta
This presentation was one of 13 presentations in the oneday forum, "Excellence in Computer Simulation," which brought together a broad set of experts to reflect on the future of computational science and engineering.

NanoElectronic MOdeling: NEMO
20 Dec 2007   Contributor(s):: Gerhard Klimeck
This presentation was one of 13 presentations in the oneday forum, "Excellence in Computer Simulation," which brought together a broad set of experts to reflect on the future of computational science and engineering.Novel nanoelectronic devices such as quantum dots, nanowires, and ultrascaled...

Carrier Transport at the Nanoscale
27 Nov 2007   Contributor(s):: Mark Lundstrom
Fall 2007Note: A more current teaching of this course with online lectures is available as ECE 656: Electronic Transport in Semiconductors (Fall 2011).This is a course about how charge flows in semiconductors with an emphasis on transport at the nanoscale. After a brief review basic concepts, the...

Engineering at the nanometer scale: Is it a new material or a new device?
06 Nov 2007   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 MoleculeAssisted Transport in Nanotransistors
06 Nov 2007   Contributor(s):: Kamil Walczak
Molecular electronics faces many problems in practical device implementation, due to difficulties with fabrication and gateability. In these devices, molecules act as the main conducting channel. One could imagine alternate device structures where molecules act as quantum dots rather than...

MCW07 Simple Models for Molecular Transport Junctions
13 Sep 2007   Contributor(s):: , Abraham Nitzan, Mark 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 steadystate regime.