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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.

Resources (101-120 of 147)

  1. Multidimensional nanoscale device modeling: the finite element method applied to the non-equilibrium Green's function formalism

    31 Oct 2006 | Papers | Contributor(s): Eric Polizzi, Supriyo Datta

    This work deals with the modeling and the numerical simulation of quantum transport in multidimensional open nanoscale devices. The electron transport in the device is described using the...

    http://nanohub.org/resources/1935

  2. Non Equilibrium Green's Functions for Dummies: Introduction to the One Particle NEGF equations

    30 Oct 2006 | Papers | Contributor(s): Magnus Paulsson

    Non equilibrium Green's function methods are regularly used to calculate current and charge densities in nanoscale (both molecular and semiconductor) conductors under bias. This method is mainly...

    http://nanohub.org/resources/1932

  3. Modeling Quantum Transport in Nanoscale Transistors

    30 Oct 2006 | Papers | Contributor(s): Ramesh Venugopal

    As critical transistor dimensions scale below the 100 nm (nanoscale) regime, quan- tum mechanical effects begin to manifest themselves and affect important device performance metrics....

    http://nanohub.org/resources/1930

  4. Carbon Nanotube Electronics: Modeling, Physics, and Applications

    30 Oct 2006 | Papers | Contributor(s): Jing Guo

    In recent years, significant progress in understanding the physics of carbon nanotube electronic devices and in identifying potential applications has occurred. In a nanotube, low bias...

    http://nanohub.org/resources/1928

  5. A Three-Dimensional Quantum Simulation of Silicon Nanowire Transistors with the Effective-Mass Approximation

    30 Oct 2006 | Papers | Contributor(s): Jing Wang, Eric Polizzi, Mark Lundstrom

    The silicon nanowire transistor (SNWT) is a promising device structure for future integrated circuits, and simulations will be important for understanding its device physics and assessing its...

    http://nanohub.org/resources/1926

  6. Electrical Resistance: an Atomistic View

    26 Oct 2006 | Papers | Contributor(s): Supriyo Datta

    This tutorial article presents a “bottom-up” view of electrical resistance starting from something really small, like a molecule, and then discussing the issues that arise as we move to bigger...

    http://nanohub.org/resources/1919

  7. Nanoscale MOSFETs: Physics, Simulation and Design

    26 Oct 2006 | Papers | Contributor(s): Zhibin Ren

    This thesis discusses device physics, modeling and design issues of nanoscale transistors at the quantum level. The principle topics addressed in this report are 1) an implementation of...

    http://nanohub.org/resources/1917

  8. Modeling of Nanoscale Devices

    19 Oct 2006 | Papers | Contributor(s): M. P. Anantram, Mark Lundstrom, Dmitri Nikonov

    We aim to provide engineers with an introduction to the nonequilibriumGreen’s function (NEGF) approach, which is a powerful conceptual tool and a practical analysismethod to treat nanoscale...

    http://nanohub.org/resources/1902

  9. A Quantum Mechanical Analysis of Channel Access Geometry and Series Resistance in Nanoscale Transistors

    19 Oct 2006 | Papers | Contributor(s): Ramesh Venugopal, Sebastien Goasguen, Supriyo Datta, Mark Lundstrom

    In this paper, we apply a two-dimensional quantum mechanical simulation scheme to study the effect of channel access geometries on device performance. This simulation scheme solves the...

    http://nanohub.org/resources/1900

  10. Introduction to the Keldysh Nonequilibrium Green Function Technique

    06 Oct 2006 | Papers | Contributor(s): A. P. Jauho

    Keldysh nonequilibrium Green function technique is used very widely to describe transport phenomena in mesoscopic systems. The technique is somewhat subtle, and a rigorous treatment would require...

    http://nanohub.org/resources/1877

  11. nanoMOS 2.0: A Two -Dimensional Simulator for Quantum Transport in Double-Gate MOSFETs

    06 Oct 2006 | Papers | Contributor(s): Zhibin Ren, Ramesh Venugopal, Sebastien Goasguen, Supriyo Datta, Mark Lundstrom

    A program to numerically simulate quantum transport in double gate MOSFETs is described. The program uses a Green’s function approach and a simple treatment of scattering based on the idea of...

    http://nanohub.org/resources/1875

  12. Simulating Quantum Transport in Nanoscale Transistors: Real versus Mode-Space Approaches

    28 Sep 2006 | Papers | Contributor(s): Zhibin Ren, Supriyo Datta, Mark Lundstrom, Ramesh Venugopal, D. Jovanovic

    In this paper, we present a computationally efficient, two-dimensional quantum mechanical sim- ulation scheme for modeling electron transport in thin body, fully depleted, n-channel, silicon-...

    http://nanohub.org/resources/1835

  13. Device Physics and Simulation of Silicon Nanowire Transistors

    28 Sep 2006 | Papers | Contributor(s): Jing Wang

    As the conventional silicon metal-oxide-semiconductor field-effect transistor (MOSFET) approaches its scaling limits, many novel device structures are being extensively explored. Among them,...

    http://nanohub.org/resources/1833

  14. Nanoscale Device Modeling: From MOSFETs to Molecules

    20 Sep 2006 | Papers | Contributor(s): Prashant Subhash Damle

    This thesis presents a rigorous yet practical approach to model quantum transport in nanoscale electronic devices. As convetional metal oxide semiconductor devices shrink below the one hundred...

    http://nanohub.org/resources/1816

  15. Towards Multi-Scale Modeling of Carbon Nanotube Transistors

    20 Sep 2006 | Papers | Contributor(s): Jing Guo, Supriyo Datta, Mark Lundstrom, M. P. Anantram

    Multiscale simulation approaches are needed in order to address scientific and technological questions in the rapidly developing field of carbon nanotube electronics. In this paper, we...

    http://nanohub.org/resources/1818

  16. Quantum Transport for Nanostructures

    17 Sep 2006 | Papers | Contributor(s): Mathieu Luisier

    Nonequilibrium Green's function techniques, initiated by Schwinger and Kadanoff and Baym allow ones to study the time evolution of a many-particle quantum sys- tem. Knowing the 1-particle...

    http://nanohub.org/resources/1792

  17. Understanding Phonon Dynamics via 1D Atomic Chains

    04 Apr 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....

    http://nanohub.org/resources/1186

  18. Quantum Transport: Atom to Transistor (Spring 2004)

    23 May 2006 | Courses | Contributor(s): Supriyo Datta

    Spring 2004 Please Note: A newer version of this course is now available and we would greatly appreciate your feedback regarding the new format and contents. Course Information...

    http://nanohub.org/resources/1490

  19. Exploring Electron Transfer with Density Functional Theory

    11 Jun 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...

    http://nanohub.org/resources/1566

  20. 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...

    http://nanohub.org/resources/1533

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