Piece-Wise Constant Potential Barriers Tool Demonstration: Bandstructure Formation with Finite Superlattices

11 Jun 2009 | Animations | Contributor(s): Gerhard Klimeck, Benjamin P Haley

This video shows the simulation and analysis of a systems with a series of potential barriers. Several powerful analytic features of Piece-wise Constant Potential Barrier Tool (PCPBT) are …

https://nanohub.org/resources/6836

K-12: Introduction to Quantum Wells

24 Nov 2008 | Teaching Materials | Contributor(s): David Beck, Mark M Budnik

A lesson plan for a 20-30 minute exercise for 4th and 5th grade Gifted and Talented students to explore the concept of quantum wells. The objectives of the lesson are: * The students will be able …

https://nanohub.org/resources/5925

Real space first-principles semiempirical pseudopotentials for Fe/MgO/Fe

03 Dec 2008 | Downloads | Contributor(s): Kirk H. Bevan

A set of semiempirical pseudopotentials for the atomistic modeling of Fe/MgO/Fe tunnel junctions. See the attached document for a full description of their derivation and the modeling approach. …

https://nanohub.org/resources/5997

First Principles Non-Equilibrium Green's Function Modeling of Vacum and Oxide Barrier Tunneling

01 Dec 2008 | Publications | Contributor(s): Kirk H. Bevan

Vacuum and oxide barrier electron tunneling phenomena have been studied at length for several decades. Yet with electron device barrier widths now commonly measured in atomic units, complex quantum …

https://nanohub.org/resources/5957

Assembly for Nanotechnology Survey Courses

05 Nov 2008 | Tools | Contributor(s): Gerhard Klimeck, Dragica Vasileska

Educational Tools for Classroom and Homework use to introduce nanotechnology concepts

https://nanohub.org/resources/antsy

AQME - Advancing Quantum Mechanics for Engineers

12 Aug 2008 | Tools | Contributor(s): Gerhard Klimeck, Xufeng Wang, Dragica Vasileska

One-stop-shop for teaching quantum mechanics for engineers

https://nanohub.org/resources/aqme

Lecture 3A: Spin Transport

20 Aug 2008 | Online Presentations | Contributor(s): Supriyo Datta

Objective: To extend the model from Lectures 1 and 2 to include electron spin. Every electron is an elementary “magnet” with two states having opposite magnetic moments. Usually this has no major …

https://nanohub.org/resources/5269

Lecture 3B: Spin Transport

20 Aug 2008 | Online Presentations | Contributor(s): Supriyo Datta

Objective: To extend the model from Lectures 1 and 2 to include electron spin. Every electron is an elementary “magnet” with two states having opposite magnetic moments. Usually this has no major …

https://nanohub.org/resources/5270

ABACUS - Assembly of Basic Applications for Coordinated Understanding of Semiconductors

16 Jul 2008 | Tools | Contributor(s): Xufeng Wang, Dragica Vasileska, Gerhard Klimeck

One-stop-shop for teaching semiconductor device education

https://nanohub.org/resources/abacus

Piece-Wise Constant Potential Barriers Tool

30 Jun 2008 | Tools | Contributor(s): Xufeng Wang, Samarth Agarwal, Gerhard Klimeck, Dragica Vasileska, Mathieu Luisier, Jean Michel D Sellier

Transmission and the reflection coefficient of a five, seven, nine, eleven and 2n-segment piece-wise constant potential energy profile

https://nanohub.org/resources/pcpbt

Spin Coupled Quantum Dots

09 Jul 2008 | Tools | Contributor(s): John Shumway, Matthew Gilbert

Path integral calculation of exchange coupling of spins in neighboring quantum dots.

https://nanohub.org/resources/spincoupleddots

Tunneling Through Triangular Barrier: an Exercise for PCPBT

23 Jul 2008 | Teaching Materials | Contributor(s): Dragica Vasileska, Gerhard Klimeck

This exercise teaches the users that a very good result can be obtained when the triangular barrier is approximated with 11 segment piece-wise constant potential barrier steps. …

https://nanohub.org/resources/5102

Slides: WKB Approximation Applications

09 Jul 2008 | Teaching Materials | Contributor(s): Dragica Vasileska, Gerhard Klimeck

www.eas.asu.edu/~vasileskNSF

https://nanohub.org/resources/4988

Quantum Mechanics: Tunneling

08 Jul 2008 | Series | Contributor(s): Dragica Vasileska, Gerhard Klimeck

In quantum mechanics, quantum tunnelling is a micro nanoscopic phenomenon in which a particle violates the principles of classical mechanics by penetrating a potential barrier or impedance higher …

https://nanohub.org/resources/4945

Reading Material: Tunneling

08 Jul 2008 | Teaching Materials | Contributor(s): Dragica Vasileska

www.eas.asu.edu/~vasileskNSF

https://nanohub.org/resources/4940

Computational Nanoscience, Lecture 26: Life Beyond DFT -- Computational Methods for Electron Correlations, Excitations, and Tunneling Transport

16 May 2008 | Teaching Materials | Contributor(s): Jeffrey B. Neaton

In this lecture, we provide a brief introduction to "beyond DFT" methods for studying excited state properties, optical properties, and transport properties. We discuss how the GW approximation to …

https://nanohub.org/resources/4574

Quantum and Semi-classical Electrostatics Simulation of SOI Trigates

19 Feb 2008 | Tools | Contributor(s): Hyung-Seok Hahm, Andres Godoy

Generate quantum/semi-classical electrostatic simulation results for a simple Trigate structure

https://nanohub.org/resources/MCTrigate

What Promises do Nanotubes and Nanowires Hold for Future Nanoelectronics Applications?

18 Feb 2008 | Online Presentations | Contributor(s): Joerg Appenzeller

Various low-dimensional materials are currently explored for future electronics applications. The common ground for all these structures is that the surface related impact can no longer be ignored …

https://nanohub.org/resources/4059

Finite Height Quantum Well: an Exercise for Band Structure

31 Jan 2008 | Teaching Materials | Contributor(s): David K. Ferry

Use the Resonant Tunneling Diodes simulation tool on nanoHUB to explore the effects of finite height quantum wells. Looking at a 2 barrier device, 300 K, no bias, other standard variables, and 3 nm …

https://nanohub.org/resources/3949

Application of the Keldysh Formalism to Quantum Device Modeling and Analysis

14 Jan 2008 | Publications | Contributor(s): Roger Lake

The effect of inelastic scattering on quantum electron transport through layered semi-conductor structures is studied numerically using the approach based on the non-equilibrium Green's function …

https://nanohub.org/resources/3833