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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.

All Categories (121-140 of 324)

  1. McCoy Lecture: Nanodevices and Maxwell's Demon

    04 Oct 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.

    http://nanohub.org/resources/1831

  2. CQT Lecture 4: Coulomb blockade and Fock space

    30 Nov 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...

    http://nanohub.org/resources/2044

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

    30 Nov 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.

    http://nanohub.org/resources/2043

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

    30 Nov 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.

    http://nanohub.org/resources/2042

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

    30 Nov 2006 | Online Presentations | Contributor(s): Supriyo Datta

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

    http://nanohub.org/resources/2041

  6. CQT Introduction

    30 Nov 2006 | Online Presentations | Contributor(s): Supriyo Datta

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

    http://nanohub.org/resources/2040

  7. CQT: Concepts of Quantum Transport

    30 Nov 2006 | Courses | Contributor(s): Supriyo Datta

    Note: For an expanded version of these lectures see Datta's 2008 NCN@Purdue Summer School presentations on Nanoelectronics and the Meaning of Resistance. How does the resistance of a...

    http://nanohub.org/resources/2039

  8. MOSCNT: code for carbon nanotube transistor simulation

    14 Nov 2006 | Downloads | Contributor(s): Siyu Koswatta, Jing Guo, Dmitri Nikonov

    Ballistic transport in carbon nanotube metal-oxide-semiconductor field-effect transistors (CNT-MOSFETs) is simulated using the Non-equilibrium Green’s function formalism. A cylindrical transistor...

    http://nanohub.org/resources/1989

  9. recursive algorithm for NEGF in Matlab

    13 Nov 2006 | Downloads | Contributor(s): Dmitri Nikonov, Siyu Koswatta

    This zip-archive contains two Matlab functions for the recursive solution of the partial matrix inversion and partial 3-matrix multiplication used in the non-equilibrium Green’s function (NEGF)...

    http://nanohub.org/resources/1983

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

    31 Oct 2006 | Publications | 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

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

    30 Oct 2006 | Publications | 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

  12. Modeling Quantum Transport in Nanoscale Transistors

    30 Oct 2006 | Publications | 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

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

    30 Oct 2006 | Publications | 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

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

    30 Oct 2006 | Publications | 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

  15. Electrical Resistance: an Atomistic View

    26 Oct 2006 | Publications | 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

  16. Nanoscale MOSFETs: Physics, Simulation and Design

    26 Oct 2006 | Publications | 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

  17. Modeling of Nanoscale Devices

    19 Oct 2006 | Publications | 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

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

    19 Oct 2006 | Publications | 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

  19. Introduction to the Keldysh Nonequilibrium Green Function Technique

    06 Oct 2006 | Publications | 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

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

    06 Oct 2006 | Publications | 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

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