1D Heterostructure Tool

04 Aug 2008 | Tools | Contributor(s): Arun Goud Akkala, Sebastian Steiger, Jean Michel D Sellier, Sunhee Lee, Michael Povolotskyi, Tillmann Christoph Kubis, Hong-Hyun Park, Samarth Agarwal, Gerhard Klimeck

Poisson-Schrödinger Solver for 1D Heterostructures

https://nanohub.org/resources/5203

ABACUS Exercise: Bandstructure – Kronig-Penney Model and Tight-Binding Exercise

20 Jul 2010 | Teaching Materials | Contributor(s): Dragica Vasileska, Gerhard Klimeck

The objective of this exercise is to start with the simple Kronig-Penney model and understand formations of bands and gaps in the dispersion relation that describes the motion of carriers in 1D …

https://nanohub.org/resources/9372

Atomistic Electronic Structure Calculations of Unstrained Alloyed Systems Consisting of a Million Atoms

14 Jan 2008 | Publications | Contributor(s): Gerhard Klimeck, Timothy Boykin

The broadening of the conduction and valence band edges due to compositional disorder in alloyed materials of finite extent is studied using an s p3 s ∗ tight binding model. Two sources of …

https://nanohub.org/resources/3821

Band Structure Lab Demonstration: Bulk Strain

03 Jun 2009 | Animations | Contributor(s): Gerhard Klimeck

This video shows an electronic structure calculation of bulk Si using Band Structure Lab. Several powerful features of this tool are demonstrated.

https://nanohub.org/resources/6815

Carbon nanotube bandstructure

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

Carbon nanotubes are allotropes of carbon with a cylindrical nanostructure, and can be categorized into single-walled nanotubes (SWNT) and multi-walled nanotubes (MWNT). These cylindrical carbon …

https://nanohub.org/resources/8807

CGTB

15 Jun 2006 | Tools | Contributor(s): Gang Li, Yang Xu, Narayan Aluru

Compute the charge density distribution and potential variation inside a MOS structure by using a coarse-grained tight binding model

https://nanohub.org/resources/1586

Computational Nanoscience, Lecture 17: Tight-Binding, and Moving Towards Density Functional Theory

21 Mar 2008 | Teaching Materials | Contributor(s): Elif Ertekin, Jeffrey C Grossman

The purpose of this lecture is to illustrate the application of the Tight-Binding method to a simple system and then to introduce the concept of Density Functional Theory. The motivation to mapping …

https://nanohub.org/resources/4164

Development of a Nanoelectronic 3-D (NEMO 3-D ) Simulator for Multimillion Atom Simulations and Its Application to Alloyed Quantum Dots

14 Jan 2008 | Publications | Contributor(s): Gerhard Klimeck, Timothy Boykin

Material layers with a thickness of a few nanometers are common-place in today’s semiconductor devices. Before long, device fabrication methods will reach a point at which the other two device …

https://nanohub.org/resources/3819

High Precision Quantum Control of Single Donor Spins in Silicon

14 Jan 2008 | Publications | Contributor(s): Rajib Rahman, marta prada, Gerhard Klimeck, Lloyd Hollenberg

The Stark shift of the hyperfine coupling constant is investigated for a P donor in Si far below the ionization regime in the presence of interfaces using tight-binding and band minima basis …

https://nanohub.org/resources/3829

Lecture 2: Graphene Fundamentals

17 Sep 2009 | Online Presentations | Contributor(s): Supriyo Datta

Network for Computational Nanotechnology, Intel Foundation

https://nanohub.org/resources/7384

Nanoelectronic Modeling Lecture 25b: NEMO1D - Hole Bandstructure in Quantum Wells and Hole Transport in RTDs

02 Mar 2010 | Online Presentations | Contributor(s): Gerhard Klimeck

Heterostructures such as resonant tunneling diodes, quantum well photodetectors and lasers, and cascade lasers break the symmetry of the crystalline lattice. Such break in lattice symmetry causes a …

https://nanohub.org/resources/8595

Nanoelectronic Modeling Lecture 28: Introduction to Quantum Dots and Modeling Needs/Requirements

02 Mar 2010 | Online Presentations | Contributor(s): Gerhard Klimeck

This presentation provides a very high level software overview of NEMO1D. Learning Objectives: This lecture provides a very high level overview of quantum dots. The main issues and questions …

https://nanohub.org/resources/8598

Nanoelectronic Modeling Lecture 29: Introduction to the NEMO3D Tool

02 Mar 2010 | Online Presentations | Contributor(s): Gerhard Klimeck

This presentation provides a very high level software overview of NEMO3D. The items discussed are: Modeling Agenda and Motivation Tight-Binding Motivation and basic formula expressions Tight …

https://nanohub.org/resources/8599

Nanoelectronic Modeling Lecture 32: Strain Layer Design through Quantum Dot TCAD

07 Jul 2010 | Online Presentations | Contributor(s): Gerhard Klimeck, Muhammad Usman

This presentation demonstrates the utilization of NEMO3D to understand complex experimental data of embedded InAs quantum dots that are selectively overgrown with a strain reducing InGaAs layer. …

https://nanohub.org/resources/9272

Nanoelectronic Modeling Lecture 40: Performance Limitations of Graphene Nanoribbon Tunneling FETS due to Line Edge Roughness

08 Jul 2010 | Online Presentations | Contributor(s): Gerhard Klimeck, Mathieu Luisier

This presentation the effects of line edge roughness on graphene nano ribbon (GNR) transitors.. Learning Objectives: GNR TFET Simulation pz Tight-Binding Orbital Model 3D …

https://nanohub.org/resources/9283

OMEN Nanowire

02 Sep 2008 | Tools | Contributor(s): SungGeun Kim, Mathieu Luisier, Benjamin P Haley, Abhijeet Paul, Saumitra Raj Mehrotra, Gerhard Klimeck

Full-band 3D quantum transport simulation in nanowire structure

https://nanohub.org/resources/5359