
Resonant Tunneling Diode operation
22 Apr 2010  Animations  Contributor(s): Saumitra Raj Mehrotra, Gerhard Klimeck
A resonant tunneling diode (RTD) is a type of diode with a resonant tunneling structure that allows electrons to tunnel through various resonant states at certain energy levels. RTDs can be...
http://nanohub.org/resources/8799

Simulation of the Spin Field Effect Transistors: Effects of Tunneling and Spin Relaxation on its Performance
05 Apr 2010  Online Presentations  Contributor(s): Yunfei Gao
A numerical simulation of spindependent quantum transport for a spin field effect transistor
(spinFET) is implemented in a widely used simulator nanoMOS. This method includes the effect of...
http://nanohub.org/resources/8540

Nanoelectronic Modeling nanoHUB Demo 2: RTD simulation with NEGF
09 Mar 2010  Online Presentations  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...
http://nanohub.org/resources/8317

Nanoelectronic Modeling nanoHUB Demo 1: nanoHUB Tool Usage with RTD Simulation with NEGF
09 Mar 2010  Online Presentations  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...
http://nanohub.org/resources/8318

Nanoelectronic Modeling Lecture 26: NEMO1D 
09 Mar 2010  Online Presentations  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...
http://nanohub.org/resources/8596

Nanoelectronic Modeling Lecture 12: Open 1D Systems  Transmission through Double Barrier Structures  Resonant Tunneling
27 Jan 2010  Online Presentations  Contributor(s): Gerhard Klimeck, Dragica Vasileska
This presentation shows that double barrier structures can show unity transmission for energies BELOW the barrier height, resulting in resonant tunneling. The resonance can be associated with a...
http://nanohub.org/resources/8195

ME 597 Lecture 3: Quantum Tunneling/The STM
08 Oct 2009  Online Presentations  Contributor(s): Ron Reifenberger
Topics:
Quantum Tunneling
The STM – basic idea
Recommended Reading: See References below.
G. Binnig, H. Rohrer, Ch. Gerber, E. Weibel, “Tunneling through a controllable vacuum gap”,...
http://nanohub.org/resources/7563

Lecture 6: Graphene PN Junctions
22 Sep 2009  Online Presentations  Contributor(s): Mark Lundstrom
Outline:
Introduction
Electron optics in graphene
Transmission across NP junctions
Conductance of PN and NN junctions
Discussion
Summary
Network for Computational Nanotechnology,
Intel...
http://nanohub.org/resources/7423

Illinois ECE 598EP Lecture 12  Hot Chips: Boundary Resistance and Thermometry
17 Jul 2009  Online Presentations  Contributor(s): Eric Pop, Omar N Sobh
Boundary Resistance and Thermometry
Topics:
Summary of Boundary Resistance
Acoustic vs. Diffuse Mismatch Model
Band to Band Tunneling Conduction
Thermionic and Field Emission(3D)
...
http://nanohub.org/resources/7115

PieceWise 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 Piecewise Constant Potential Barrier Tool (PCPBT) are...
http://nanohub.org/resources/6836

K12: Introduction to Quantum Wells
02 Feb 2009  Teaching Materials  Contributor(s): David Beck, Mark M Budnik
A lesson plan for a 2030 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...
http://nanohub.org/resources/5925

Real space firstprinciples 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...
http://nanohub.org/resources/5997

First Principles NonEquilibrium Green's Function Modeling of Vacum and Oxide Barrier Tunneling
01 Dec 2008  Papers  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...
http://nanohub.org/resources/5957

Assembly for Nanotechnology Survey Courses
06 Nov 2008  Tools  Contributor(s): Gerhard Klimeck, Dragica Vasileska
Educational Tools for Classroom and Homework use to introduce nanotechnology concepts
http://nanohub.org/resources/antsy

AQME  Advancing Quantum Mechanics for Engineers
21 Aug 2008  Tools  Contributor(s): Gerhard Klimeck, Xufeng Wang, Dragica Vasileska
Onestopshop for teaching quantum mechanics for engineers
http://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...
http://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...
http://nanohub.org/resources/5270

ABACUS  Assembly of Basic Applications for Coordinated Understanding of Semiconductors
08 Aug 2008  Tools  Contributor(s): Xufeng Wang, Dragica Vasileska, Gerhard Klimeck
Onestopshop for teaching semiconductor device education
http://nanohub.org/resources/abacus

PieceWise Constant Potential Barriers Tool
08 Aug 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 2nsegment piecewise constant potential energy profile
http://nanohub.org/resources/pcpbt

Spin Coupled Quantum Dots
05 Aug 2008  Tools  Contributor(s): John Shumway, Matthew Gilbert
Path integral calculation of exchange coupling of spins in neighboring quantum dots.
http://nanohub.org/resources/spincoupleddots