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 (41-60 of 193)

  1. Green's Functions Method Explained

    10 Aug 2011 | Contributor(s):: Dragica Vasileska, Gerhard Klimeck

    This is a tutorial on non-equilibrium Green's functions.

  2. ZAHRA AHANGARI

    http://nanohub.org/members/56016

  3. How to consider electron-photon interaction w/o using self-energy?

    Closed | Responses: 0

    Hi, In negf, interactions are considered as self-energies. For electron-photon interaction, a perturbation Hamiltonian is derived and then self-energy is found using coupled-field theory. Now,...

    http://nanohub.org/answers/question/799

  4. Bagavathi Shivakumar

    http://nanohub.org/members/55079

  5. Tutorial 4: Far-From-Equilibrium Quantum Transport

    29 Mar 2011 | | Contributor(s):: Gerhard Klimeck

    These lectures focus on the application of the theories using the nanoelectronic modeling tools NEMO 1- D, NEMO 3-D, and OMEN to realistically extended devices. Topics to be covered are realistic resonant tunneling diodes, quantum dots, nanowires, and Ultra-Thin-Body Transistors.

  6. Tutorial 4a: High Bias Quantum Transport in Resonant Tunneling Diodes

    29 Mar 2011 | | Contributor(s):: Gerhard Klimeck

    Outline:Resonant Tunneling Diodes - NEMO1D: Motivation / History / Key InsightsOpen 1D Systems: Transmission through Double Barrier Structures - Resonant TunnelingIntroduction to RTDs: Linear Potential DropIntroduction to RTDs: Realistic Doping ProfilesIntroduction to RTDs: Relaxation Scattering...

  7. FETToy

    14 Feb 2006 | | Contributor(s):: Anisur Rahman, Jing Wang, Jing Guo, Md. Sayed Hasan, Yang Liu, Akira Matsudaira, Shaikh S. Ahmed, Supriyo Datta, Mark Lundstrom

    Calculate the ballistic I-V characteristics for conventional MOSFETs, Nanowire MOSFETs and Carbon NanoTube MOSFETs

  8. OMEN Nanowire: solve the challenge

    05 Feb 2011 | | Contributor(s):: SungGeun Kim

    This document includes a challenging problems for OMEN Nanowire users. It challenges users to establish a nanowire transistor structure such that it satisfy the ITRS 2010 requirements.

  9. Electron Density in a Nanowire

    30 Jan 2011 | | Contributor(s):: Gerhard Klimeck, Saumitra Raj Mehrotra

    Electron Density in a circular Silicon nanowire transistor.

  10. OMEN Nanowire Homework Problems

    23 Jan 2011 | | Contributor(s):: SungGeun Kim

    OMEN Nanowire homework problems: anyone who has gone through the first-time user guide of OMEN Nanowire and done the examples in the guide should be able to run simulations in these homework problems and find the answers to them.

  11. OMEN Nanowire Test Problems

    24 Jan 2011 | | Contributor(s):: SungGeun Kim

    This test is for students who have gone through the OMEN Nanowire first-time user guide and other learning materials related to nanowire FETs.

  12. Inelastic Scattering in NEGF: Matlab Implementation and Exercises

    31 Dec 2010 | | Contributor(s):: Samiran Ganguly, Supriyo Datta

    A set of Matlab scripts has been developed illustrating the treatment of inelastic scattering in non-equilibrium Greens function (NEGF) based quantum transport models. The first script highlights the core principles using a simple conductor described by a (2x2) Hamiltonian matrix, while the...

  13. Lecture 3: Introduction to NEGF

    08 Sep 2010 | | Contributor(s):: Supriyo Datta

  14. Surface scattering: Made simple

    03 Sep 2010 | | Contributor(s):: Dmitri Nikonov, Himadri Pal

    Surface scattering in a quantum well.

  15. Jul 12 2010

    2010 NCN@Purdue Summer School: Electronics from the Bottom Up

    This year’s summer school will have two components: a focus on nanoelectronic devices, with an introduction to spintronics and, second, tutorials on selected topics in nanotechnology. First, we...

    http://nanohub.org/events/details/270

  16. Jun 30 2010

    Registraton Deadline: 2009 NCN@Purdue Summer School: Electronics from the Bottom Up

    This year’s summer school will have two components: a focus on nanoelectronic devices, with an introduction to spintronics and, second, tutorials on selected topics in nanotechnology. First, we...

    http://nanohub.org/events/details/271

  17. ANGEL - A Nonequilibrium Green Function Solver for LEDs

    18 Jan 2010 | | Contributor(s):: sebastian steiger

    An MPI-parallelized implementation of 1-D NEGF for heterostructures. Includes off-diagonal scattering. Effective mass band structure for electrons and holes. The online tool only provides basic NEGF functionality without scattering.

  18. Resonant Tunneling Diode operation

    09 Apr 2010 | | Contributor(s):: Saumitra Raj Mehrotra, Gerhard Klimeck

    A resonant tunneling diode (RTD) is a type of diode with a resonant tunneling structure that allows electrons to tunnel through various resonant states at certain energy levels. RTDs can be fabricated using many different types of materials (such as III-V, type IV, II-VI semiconductors) and...

  19. Nanotechnology Animation Gallery

    20 Apr 2010 | | Contributor(s):: Saumitra Raj Mehrotra, Gerhard Klimeck

    Animations and visualization are generated with various nanoHUB.org tools to enable insight into nanotechnology and nanoscience. Click on image for detailed description and larger image download. Additional animations are also available Featured nanoHUB tools: Band Structure Lab. Carrier...

  20. Nonequilibrium Green’s functions theory: Transport and optical gain in THz quantum cascade lasers

    24 Mar 2010 | | Contributor(s):: Tillmann Christoph Kubis

    Quantum cascade lasers (QCLs) are promising sources of coherent THz radiation. However, state of the art THz-QCLs are still limited to cryogenic temperatures. The charge transport in these QCLs is subject to coherent quantum phenomena, such as quantum tunneling, confinement and interferences as...