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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.
A Top-Down Introduction to the NEGF Approach
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14 Jun 2004 | | Contributor(s):: Mark Lundstrom
A Top-Down Introduction to the NEGF Approach
Atomistic Modeling of Nano Devices: From Qubits to Transistors
12 Apr 2016 | | Contributor(s):: Rajib Rahman
In this talk, I will describe such a framework that can capture complex interactions ranging from exchange and spin-orbit-valley coupling in spin qubits to non-equilibrium charge transport in tunneling transistors. I will show how atomistic full configuration interaction calculations of exchange...
Bandstructure Effects in Nano Devices With NEMO: from Basic Physics to Real Devices and to Global Impact on nanoHUB.org
08 Mar 2019 | | Contributor(s):: Gerhard Klimeck
This presentation will intuitively describe how bandstructure is modified at the nanometer scale and what some of the consequences are on the device performance.
Bandstructure in Nanoelectronics
01 Nov 2005 | | Contributor(s):: Gerhard Klimeck
This presentation will highlight, for nanoelectronic device examples, how the effective mass approximation breaks down and why the quantum mechanical nature of the atomically resolved material needs to be included in the device modeling. Atomistic bandstructure effects in resonant tunneling...
BNC Annual Research Symposium: Nanoscale Energy Conversion
23 Apr 2007 | | Contributor(s):: Timothy S Fisher
This presentation is part of a collection of presentations describing the projects, people, and capabilities enhanced by research performed in the Birck Center, and a look at plans for the upcoming year.
Can numerical “experiments” INSPIRE physical experiments?
20 Dec 2007 | | 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 computational science and engineering.
30 Nov 2006 | | Contributor(s):: Supriyo Datta
A short overview of this series of four lectures is given.
CQT Lecture 1: Nanodevices and Maxwell's Demon
Objective: To illustrate the subtle interplay of dynamics and thermodynamicsthat distinguishes transport physics.
CQT Lecture 2: Electrical Resistance - A Simple Model
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.
CQT Lecture 3: Probabilities, Wavefunctions and Green Functions
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.
CQT Lecture 4: Coulomb blockade and Fock space
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 key concept in the next stage of development of transport physics.
Density Functional Tight Binding (DFTB) Modeling in the Context of Ultra-Thin Silicon-on-Insulator MOSFETs
07 Oct 2015 | | Contributor(s):: Stanislav Markov
IWCE 2015 presentation. We investigate the applicability of density functional tight binding (DFTB) theory , coupled to non-equilibrium Green functions (NEGF), for atomistic simulations of ultra-scaled electron devices, using the DFTB+ code . In the context of ultra-thin...
ECE 495N Lecture 33: Non-Equilibrium Green's Function (NEGF) Method
04 Dec 2008 | | Contributor(s):: Supriyo Datta
ECE 495N Lecture 34: NEGF Continued I
10 Dec 2008 | | Contributor(s):: Supriyo Datta
ECE 495N Lecture 35: NEGF Continued II
ECE 659 Lecture 18: NEGF Equations
03 Mar 2009 | | Contributor(s):: Supriyo Datta
ECE 659 Lecture 36: Law of Equilibrium
01 May 2009 | | Contributor(s):: Supriyo Datta
ECE 659 Lecture 38.0: Correlations and Entanglement
04 May 2009 | | Contributor(s):: Supriyo Datta
This lecture is from the series of lecturesNanoelectronics and the Meaning of Resistance.
ECE 659 Lecture 42: Summing Up
ECET 499N Lecture 5a: Nanoelectronics III - Datta Lecture Review
19 Feb 2010 | | Contributor(s):: Helen McNally