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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.
Nanoelectronic Modeling Lecture 20: NEGF in a Quasi-1D Formulation
27 Jan 2010 | Online Presentations | Contributor(s): Gerhard Klimeck, Samarth Agarwal, Zhengping Jiang
This lecture will introduce a spatial discretization scheme of the Schrödinger equation which represents a 1D heterostructure like a resonant tunneling diode with spatially varying band edges and...
Nanoelectronic Modeling Lecture 19: Introduction to RTDs - Asymmetric Structures
27 Jan 2010 | Online Presentations | Contributor(s): Gerhard Klimeck
This lecture explores this effect in more detail by targeting an RTD that has a deliberate asymmetric structure. The collector barrier is chosen thicker than the emitter barrier. With this...
Nanoelectronic Modeling Lecture 17: Introduction to RTDs - Relaxation Scattering in the Emitter
Realistic RTDs will have nonlinear electrostatic potential in their emitter. Typically a triangular well is formed in the emitter due to the applied bias and the emitter thus contains discrete...
Nanoelectronic Modeling: From Quantum Mechanics and Atoms to Realistic Devices
25 Jan 2010 | Courses | Contributor(s): Gerhard Klimeck
The goal of this series of lectures is to explain the critical concepts in the understanding of the state-of-the-art modeling of nanoelectronic devices such as resonant tunneling diodes, quantum...
Scattering in NEGF: Made simple
09 Nov 2009 | Papers | Contributor(s): Dmitri Nikonov, Himadri Pal, George Bourianoff
Formalism for describing electron-phonon scattering, surface scattering, and spin relaxation is dervied for the Keldysh non-equilibrium Green's functions (NEGF) method. Approximation useful for...
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2009 NCN@Purdue Summer School: Electronics from the Bottom Up
22 Sep 2009 | Workshops | Contributor(s): Supriyo Datta, Mark Lundstrom, Muhammad A. Alam, Joerg Appenzeller
The school will consist of two lectures in the morning on the Nanostructured Electronic Devices: Percolation and Reliability and an afternoon lecture on Graphene Physics and Devices. A hands on...
Low Bias Transport in Graphene: An Introduction (lecture notes)
22 Sep 2009 | Presentation Materials | Contributor(s): Mark Lundstrom, Tony Low, Dionisis Berdebes
These notes complement a lecture with the same title presented by Mark Lundstrom and Dionisis Berdebes, at the NCN@Purdue Summer School, July 20-24, 2009.
Colloquium on Graphene Physics and Devices
22 Sep 2009 | Courses | Contributor(s): Joerg Appenzeller, Supriyo Datta, Mark Lundstrom
This short course introduces students to graphene as a fascinating research topic as well as to develop their skill in problem solving using the tools and techniques of electronics from the bottom up.
Lecture 2: Graphene Fundamentals
22 Sep 2009 | Online Presentations | Contributor(s): Supriyo Datta
Network for Computational Nanotechnology,
Lecture 6: Graphene PN Junctions
22 Sep 2009 | Online Presentations | Contributor(s): Mark Lundstrom
Electron optics in graphene
Transmission across NP junctions
Conductance of PN and NN junctions
Network for Computational Nanotechnology,
Lecture 3: Low Bias Transport in Graphene: An Introduction
18 Sep 2009 | Online Presentations | Contributor(s): Mark Lundstrom
Introduction and Objectives
Lecture notes are available for this lecture.
From Semi-Classical to Quantum Transport Modeling
10 Aug 2009 | Series | Contributor(s): Dragica Vasileska
This set of powerpoint slides series provides insight on what are the tools available for modeling devices that behave either classically or quantum-mechanically. An in-depth description is...
From Semi-Classical to Quantum Transport Modeling: Quantum Transport - Usuki Method and Theoretical Description of Green's Functions
10 Aug 2009 | Teaching Materials | Contributor(s): Dragica Vasileska
Jul 20 2009
RTD with NEGF Demonstration: Basic RTD Asymmetric
12 Jun 2009 | Animations | Contributor(s): Gerhard Klimeck
This video shows the analysis of a 2 barrier Resonant Tunneling Diode (RTD) over 21 bias points using RTDLab. Several powerful features of this tool are demonstrated.
OMEN Nanowire Demonstration: Nanowire Simulation and Analysis
11 Jun 2009 | Animations | Contributor(s): Gerhard Klimeck, Benjamin P Haley
This video shows the simulation and analysis of a nanowire using OMEN Nanowire. Several powerful analytic features of this tool are demonstrated.
Resonant Tunneling Diode Simulation with NEGF: First-Time User Guide
01 Jun 2009 | Teaching Materials | Contributor(s): Samarth Agarwal, Gerhard Klimeck
This first-time user guide for Resonant Tunneling Diode Simulation with NEGF provides some fundamental concepts regarding RTDs along with details on how device geometry and simulation parameters...
ECE 659 Lecture 42: Summing Up
04 May 2009 | Online Presentations | Contributor(s): Supriyo Datta