Tags: NEGF

Description

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.

Online Presentations (41-60 of 71)

  1. Nanoelectronic Modeling: Multimillion Atom Simulations, Transport, and HPC Scaling to 23,000 Processors

    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...

    https://nanohub.org/resources/3988

  2. MCW07 Physics of Contact Induced Current Asymmetry in Transport Through Molecules

    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)...

    https://nanohub.org/resources/3073

  3. Exploring Physical and Chemical control of molecular conductance: A computational study

    01 Feb 2008 | Online Presentations | Contributor(s): Barry D. Dunietz

    https://nanohub.org/resources/3945

  4. 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...

    https://nanohub.org/resources/3716

  5. 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.

    https://nanohub.org/resources/3504

  6. 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....

    https://nanohub.org/resources/3074

  7. 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.

    https://nanohub.org/resources/3072

  8. 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...

    https://nanohub.org/resources/3076

  9. 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...

    https://nanohub.org/resources/2636

  10. Highly Efficient Thermal Transport: The Application of Carbon Nanotube Array Interfaces

    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...

    https://nanohub.org/resources/2317

  11. 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.

    https://nanohub.org/resources/1831

  12. CQT Lecture 4: Coulomb blockade and Fock space

    08 Dec 2006 | Online Presentations | Contributor(s): Supriyo Datta

    Objective: 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...

    https://nanohub.org/resources/2044

  13. CQT Lecture 3: Probabilities, Wavefunctions and Green Functions

    08 Dec 2006 | Online Presentations | Contributor(s): Supriyo Datta

    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.

    https://nanohub.org/resources/2043

  14. CQT Lecture 2: Electrical Resistance - A Simple Model

    08 Dec 2006 | Online Presentations | Contributor(s): Supriyo Datta

    Objective: 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.

    https://nanohub.org/resources/2042

  15. CQT Lecture 1: Nanodevices and Maxwell's Demon

    08 Dec 2006 | Online Presentations | Contributor(s): Supriyo Datta

    Objective: To illustrate the subtle interplay of dynamics and thermodynamicsthat distinguishes transport physics.

    https://nanohub.org/resources/2041

  16. CQT Introduction

    08 Dec 2006 | Online Presentations | Contributor(s): Supriyo Datta

    A short overview of this series of four lectures is given.

    https://nanohub.org/resources/2040

  17. 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....

    https://nanohub.org/resources/1186

  18. 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 reactions...

    https://nanohub.org/resources/1566

  19. 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...

    https://nanohub.org/resources/1533

  20. 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...

    https://nanohub.org/resources/1487