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.

All Categories (101-120 of 182)

  1. Lecture 5A: Correlations and Entanglement

    20 Aug 2008 | Online Presentations | Contributor(s): Supriyo Datta

    Objective: To relate the one-electron picture used throughout these lectures to the more general but less tractable many-particle picture that underlies it. We introduce this new viewpoint using...

    https://nanohub.org/resources/5273

  2. Lecture 5B: Correlations and Entanglement

    20 Aug 2008 | Online Presentations | Contributor(s): Supriyo Datta

    Objective: To relate the one-electron picture used throughout these lectures to the more general but less tractable many-particle picture that underlies it. We introduce this new viewpoint using...

    https://nanohub.org/resources/5274

  3. Nanoelectronics and the Meaning of Resistance

    20 Aug 2008 | Courses | Contributor(s): Supriyo Datta

    The purpose of this series of lectures is to introduce the "bottom-up" approach to nanoelectronics using concrete examples. No prior knowledge of quantum mechanics or statistical mechanics is...

    https://nanohub.org/resources/5279

  4. Matdcal

    05 May 2008 | Tools | Contributor(s): Kirk H. Bevan

    Non-equilibrium Green's Function Density Functional Theory Simulator

    https://nanohub.org/resources/Matdcal

  5. 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

  6. 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

  7. 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

  8. Application of the Keldysh Formalism to Quantum Device Modeling and Analysis

    14 Jan 2008 | Papers | Contributor(s): Roger Lake

    The effect of inelastic scattering on quantum electron transport through layered semi-conductor structures is studied numerically using the approach based on the non-equilibrium Green's function...

    https://nanohub.org/resources/3833

  9. Electron-Phonon and Electron-Electron Interactions in Quantum Transport

    14 Jan 2008 | Papers | Contributor(s): Gerhard Klimeck

    The objective of this work is to shed light on electron transport through sub-micron semi-conductor structures, where electronic state quantization, electron-electron interactions and...

    https://nanohub.org/resources/3831

  10. 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

  11. 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

  12. 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

  13. 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

  14. 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

  15. Introduction to FETToy

    03 Jul 2007 | Series | Contributor(s): James K Fodor, Jing Guo

    This learning module introduces nanoHUB users to the FETToy simulator. A brief introduction to FETToy is presented, followed by voiced presentations featuring the simulator in action. Upon...

    https://nanohub.org/resources/2844

  16. Introduction to nanoMOS

    02 Jul 2007 | Series | Contributor(s): James K Fodor, Jing Guo

    This learning module introduces nanoHUB users to the nanoMOS simulator. A brief introduction to nanoMOS is presented, followed by voiced presentations featuring the simulator in action. Upon...

    https://nanohub.org/resources/2845

  17. NEGF Formulism Question

    Open | Responses: 1

    Hi,

    I’m not too familiar with the NEGF formalism. But had a very basic question.

    I’ve read that NEGF can be viewed as a “Quantum Boltzmann Equation”. When...

    https://nanohub.org/answers/question/8

  18. Time-dependent NEGF

    Open | Responses: 1

    In the time-dependent NEGF equation, given a sigma_in(t,t’) due to the dot, I am getting an I-V equation that is making it difficult for me to group terms. For instance, looking at...

    https://nanohub.org/answers/question/6

  19. Quantum dots

    Open | Responses: 1

    What I want to do is building an aluminum quantum dot coupled to aluminum leads to observe Coulomb Blockade. To form the tunnel barriers we oxidize the Al in a plasma without any detailed...

    https://nanohub.org/answers/question/2

  20. Multi-gate Nanowire FET

    18 May 2007 | Tools | Contributor(s): Mincheol Shin

    3D simulator for silicon nanowire field effect transistors with multiple gates

    https://nanohub.org/resources/mgnanowirefet