
Additional Tutorials on Selected Topics in Nanotechnology
29 Mar 2011   Contributor(s):: Gerhard Klimeck, Umesh V. Waghmare, Timothy S Fisher, N. S. Vidhyadhiraja
Select tutorials in nanotechnology, a part of the 2010 NCN@Purdue Summer School: Electronics from the Bottom Up.

Tutorial 4: FarFromEquilibrium 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 3D, and OMEN to realistically extended devices. Topics to be covered are realistic resonant tunneling diodes, quantum dots, nanowires, and UltraThinBody Transistors.

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...

Tutorial 4b: Introduction to the NEMO3D Tool  Electronic Structure and Transport in 3D
29 Mar 2011   Contributor(s):: Gerhard Klimeck
Electronic Structure and Transport in 3D  Quantum Dots, Nanowires and UltraThin Body Transistors

Tutorial 4c: Formation of Bandstructure in Finite Superlattices (Exercise Session)
29 Mar 2011   Contributor(s):: Gerhard Klimeck
How does bandstructure occur? How large does a repeated system have to be? How does a finite superlattice compare to an infinite superlattice?

Tutorial 4d: Formation of Bandstructure in Finite Superlattices (Exercise Demo)
29 Mar 2011   Contributor(s):: Gerhard Klimeck
Demonstration of thePieceWise Constant Potential Barriers Tool.

Berkeley GW
27 Sep 2009   Contributor(s):: Alexander S McLeod, Peter Doak, Sahar Sharifzadeh, Jeffrey B. Neaton
This is an educational tool that illustrates the calculation of the electronic structure of materials using manybody perturbation theory within the GW approximation

2010 NCN@Purdue Summer School: Electronics from the Bottom Up
20 Apr 2010 
Electronics from the Bottom Up seeks to bring a new perspective to electronic devices – one that is designed to help realize the opportunities that nanotechnology presents.

Coupled Effect of Strain and Magnetic Field on Electronic Bandstructure of Graphene
03 Dec 2010   Contributor(s):: yashudeep singh
We explore the possibility of coupling between planar strain and perpendicular magnetic field on electronic bandstructure of graphene. We study uniaxially, biaxially and shear strained graphene under magnetic field. In line with Rammal’s formalism using nearest neighbor tight binding scheme we...

ABACUS: Test for Bandstructure Lab
09 Aug 2010   Contributor(s):: Dragica Vasileska, Gerhard Klimeck
This is a test that examines ones understanding of electronic structure once he/she has gone through the materials and exercises provided on the nanoHUB as part of the ABACUS Bandstructure topic page and running the Bandstructure Lab.

Nanoelectronic Modeling Lecture 41: FullBand and Atomistic Simulation of Realistic 40nm InAs HEMT
08 Jul 2010   Contributor(s):: Gerhard Klimeck, Neerav Kharche, Neophytos Neophytou, Mathieu Luisier
This presentation demonstrates the OMEN capabilities to perform a multiscale simulation of advanced InAsbased high mobility transistors.Learning Objectives:Quantum Transport Simulator FullBand and Atomistic IIIV HEMTs Performance Analysis Good Agreement with Experiment Some Open Issues...

Nanoelectronic Modeling Lecture 35: Alloy Disorder in Nanowires
07 Jul 2010   Contributor(s):: Gerhard Klimeck, Timothy Boykin, Neerav Kharche, Mathieu Luisier, Neophytos Neophytou
This presentation discusses the consequences of Alloy Disorder in unstrained strained AlGaAs nanowiresRelationship between dispersion relationship and transmission in perfectly ordered wiresBand folding in Si nanowiresTranmisison in disordered wires – relationship to an approximate...

Nanoelectronic Modeling Lecture 34: Alloy Disorder in Quantum Dots
07 Jul 2010   Contributor(s):: Gerhard Klimeck, Timothy Boykin, Chris Bowen
This presentation discusses the consequences of Alloy Disorder in strained InGaAs Quantum Dots Reminder of the origin of bandstructure and bandstructure engineeringWhat happens when there is disorder?Concept of disorder in the local bandstructureConfiguration noise, concentration noise,...

Description of the K.P Method for Band Structure Calculation
04 Aug 2010   Contributor(s):: Dragica Vasileska
This set of slides describes the k.p mehod for band structure calculation.

Nanoelectronic Modeling Lecture 33: Alloy Disorder in Bulk
07 Jul 2010   Contributor(s):: Gerhard Klimeck, Timothy Boykin, Chris Bowen
This presentation discusses disorder in AlGaAs unstrained systems in bulk. Bandstructure of an ideal simple unit cellWhat happens when there is disorder?Concept of a supercellBand folding in a supercellBand extraction from the concept of approximate bandstructureComparison of alloy disorder...

Thermoelectric Nanotechnology
25 Jul 2010   Contributor(s):: Mark Lundstrom
his talk is an undergraduate level introduction to the field. After a brief discussion of applications, the physics of the Peltier effect is described, and the Figure of Merit (FOM), ZT, which controls the efficiency of a thermoelectric refrigerator or electric power generator, is discussed. The...

ABACUS Exercise: Bandstructure – KronigPenney Model and TightBinding Exercise
20 Jul 2010   Contributor(s):: Dragica Vasileska, Gerhard Klimeck
The objective of this exercise is to start with the simple KronigPenney model and understand formations of bands and gaps in the dispersion relation that describes the motion of carriers in 1D periodic potentials. The second exercise examines the behavior of the bands at the Brillouin zone...

Nanoelectronic Modeling Lecture 25a: NEMO1D  Full Bandstructure Effects
02 Mar 2010   Contributor(s):: Gerhard Klimeck
(quantitative RTD modeling at room temperature)

Band Structure Lab Exercise
28 Jun 2010   Contributor(s):: Gerhard Klimeck, Parijat Sengupta, Dragica Vasileska
Investigations of the electron energy spectra of solids form one of the most active fields of research. Knowledge of band theory is essential for application to specific problems such as Gunn diodes, tunnel diodes, photodetectors etc. There are several standard methods to compute the band...

Ripples and Warping of Graphene: A Theoretical Study
19 May 2010   Contributor(s):: Umesh V. Waghmare
We use firstprinciples density functional theory based analysis to understand formation of ripples in graphene and related 2D materials. For an infinite graphene, we show that ripples are linked with a low energy branch of phonons that exhibits quadratic dispersion at long wavelengths. Many...