
Nanoelectronic Modeling nanoHUB Demo 2: RTD simulation with NEGF
09 Mar 2010   Contributor(s):: Gerhard Klimeck
Demonstration of resonant tunneling diode (RTD) simulation using the RTD Simulation with NEGF Tool with a Hartree potential model showing potential profile, charge densities, currentvoltage characteristics, and resonance energies. Also demonstrated is a RTD simulation using a ThomasFermi...

Nanoelectronic Modeling nanoHUB Demo 1: nanoHUB Tool Usage with RTD Simulation with NEGF
09 Mar 2010   Contributor(s):: Gerhard Klimeck
Demonstration of running tools on the nanoHUB. Demonstrated is the RTD Simulation with NEGF Tool using a simple leveldrop potential model and a more realistic device using a ThomasFermi potential model.

Nanoelectronic Modeling Lecture 26: NEMO1D 
09 Mar 2010   Contributor(s):: Gerhard Klimeck
NEMO1D demonstrated the first industrial strength implementation of NEGF into a simulator that quantitatively simulated resonant tunneling diodes. The development of efficient algorithms that simulate scattering from polar optical phonons, acoustic phonons, alloy disorder, and interface...

Quantum transport in semiconductor nanostructures
04 Mar 2010   Contributor(s):: Tillmann Christoph Kubis
PhD thesis of Tillmann Christoph KubisThe main objective of this thesis is to theoretically predict the stationary charge and spin transport in mesoscopic semiconductor quantum devices in the presence of phonons and device imperfections. It is well known that the nonequilibrium Green's function...

ECET 499N Lecture 5a: Nanoelectronics III  Datta Lecture Review
19 Feb 2010   Contributor(s):: Helen McNally

Tillmann Christoph Kubis
https://nanohub.org/members/41945

Nanoelectronic Modeling Lecture 22: NEMO1D  Motivation, History and Key Insights
07 Feb 2010   Contributor(s):: Gerhard Klimeck
The primary objective of the NEMO1D tool was the quantitative modeling of high performance Resonant Tunneling Diodes (RTDs). The software tool was intended for Engineers (concepts, fast turnaround, interactive) and Scientists (detailed device anaysis). Therefore various degrees of...

Nanoelectronic Modeling Lecture 21: Recursive Green Function Algorithm
07 Feb 2010   Contributor(s):: Gerhard Klimeck
The Recursive Green Function (RGF) algorithms is the primary workhorse for the numerical solution of NEGF equations in quasi1D systems. It is particularly efficient in cases where the device is partitioned into reservoirs which may be characterized by a nonHermitian Hamiltonian and a central...

ANGEL  A Nonequilibrium Green's Function Solver for LEDs
07 Feb 2010   Contributor(s):: sebastian steiger
Introducing ANGEL, a Nonequilibrium Green’s Function code aimed at describing LEDs.ANGEL uses a description close to the classic NEMO1D paper (Lake et al., JAP 81, 7845 (1997)) to model quantum transport in a lightemitting diode (LED).ANGEL is the first 1Dheterostructure NEGF to include the...

ECE 495N: Fundamentals of Nanoelectronics Lecture Notes (Fall 2009)
04 Feb 2010   Contributor(s):: Mehdi Salmani Jelodar, Supriyo Datta (editor)
Lecture notes for the Fall 2009 teaching of ECE 495: Fundamentals of Nanoelectronics.

Nanoelectronic Modeling Lecture 20: NEGF in a Quasi1D Formulation
27 Jan 2010   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 effective masses.

Nanoelectronic Modeling Lecture 19: Introduction to RTDs  Asymmetric Structures
27 Jan 2010   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 setup we expect that the tunneling rate into the RTD from the emitter is faster than the tunneling rate...

Nanoelectronic Modeling Lecture 17: Introduction to RTDs  Relaxation Scattering in the Emitter
27 Jan 2010   Contributor(s):: Gerhard Klimeck
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 quasi bound states.

Nanoelectronic Modeling: From Quantum Mechanics and Atoms to Realistic Devices
25 Jan 2010   Contributor(s):: Gerhard Klimeck
The goal of this series of lectures is to explain the critical concepts in the understanding of the stateoftheart modeling of nanoelectronic devices such as resonant tunneling diodes, quantum wells, quantum dots, nanowires, and ultrascaled transistors. Three fundamental concepts critical to...

Scattering in NEGF: Made simple
09 Nov 2009   Contributor(s):: Dmitri Nikonov, Himadri Pal, George Bourianoff
Formalism for describing electronphonon scattering, surface scattering, and spin relaxation is dervied for the Keldysh nonequilibrium Green's functions (NEGF) method. Approximation useful for efficient numerical solution are described. The specific case of the nanoMOS simulator is...

NCN at Purdue Tools
NCN@Purdue Tool Support
We have identified a list of tools for which we commit the following level of service:
monitor support tickets, questions, and wishlists and provide a response...
https://nanohub.org/wiki/NCNatPurdueTools

Mahesh R Neupane
Though Mahesh hails from Nepal, he graduated with a Bachelors of Engineering (BE)degree in Computer Science from University of Madras, India, in 2003. In 2005, he received a MS degree in Computer...
https://nanohub.org/members/38579

2009 NCN@Purdue Summer School: Electronics from the Bottom Up
22 Sep 2009   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 laboratory session will be available in the afternoons.

Low Bias Transport in Graphene: An Introduction (lecture notes)
22 Sep 2009   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 2024, 2009.

Colloquium on Graphene Physics and Devices
22 Sep 2009   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.