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Atomistic Alloy Disorder in Nanostructures

This resource has a 8.2 Ranking

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Last 12 Months: updated 01 Jul, 2008
Users: 41
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Avg. Review: 4.5 out of 5 stars
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Supporting Documents

Licensed under Creative Commons according to this deed.

Contributor(s) Gerhard Klimeck
Purdue University, West Lafayette
Abstract

Electronic structure and quantum transport simulations are typically performed in perfectly ordered semiconductor structures. Bands and modes are defined resulting in quantized conduction and discrete states. But what if the material is fundamentally disordered? What if the disorder is at the same length scale as the device itself? This presentation will provide an introduction to the intriguing physics of disordered systems in bulk, quantum dots, nanowires, and quantum wells. The general tool electronic structure tool NEMO 3-D is used for the simulation of atomistically disordered systems that are of realistically large length-scales containing millions of atoms.

Biography Gerhard Klimeck is the Technical Director of the Network for Computational Nanotechnology at Purdue University and a Professor of Electrical and Computer Engineering since Dec. 2003. He was the Technical Group Supervisor at the NASA Jet Propulsion Laboratory. His research interest is in the modeling of nanoelectronic devices, parallel cluster computing, and genetic algorithms.
Credits The presentation reviews material from primarily three scientific publications:

  • "Development of a Nanoelectronic 3-D (NEMO 3-D) Simulator for Multimillion Atom Simulations and Its Application to Alloyed Quantum Dots" (INVITED), Gerhard Klimeck, Fabiano Oyafuso, Timothy B. Boykin, R. Chris Bowen, and Paul von Allmen Computer Modeling in Engineering and Science (CMES) Volume 3, No. 5 pp 601-642 (2002). preprint on nanoHUB.
  • "Atomistic Electronic Structure Calculations of Unstrained Alloyed Systems Consisting of a Million Atoms", Fabiano Oyafuso, Gerhard Klimeck, R. Chris Bowen, and Timothy B. Boykin, Journal of Computational Electronics, Vol 1. Issue 3, pp. 317-321 (2002). preprint on nanoHUB.
  • Neerav Kharche, Marta Prada, Timothy B. Boykin, and Gerhard Klimeck, "Valley-splitting in strained Silicon quantum wells modeled with 2 degree miscuts, step disorder, and alloy disorder", Applied Phys. Lett. Vol. 90, 092109 (2007). preprint on nanoHUB.

Further details and credits can be found at the NEMO 3-D home page .
Sponsored by

NCN@Purdue Student Leadership Team
Network for Computational Nanotechnology
The Institute for Nanoelectronics and Computing
Cite this work

If you reference this work in a publication, please cite as follows:

  • Klimeck, Gerhard (2007), "Atomistic Alloy Disorder in Nanostructures," http://www.nanohub.org/resources/2350/.

    BibTex | EndNote

Date posted 26 Feb, 2007
Time 02:00 PM, February 07, 2007
Location EE Building, Room 317
Type Online Presentations
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  1. 5.0 out of 5 stars 

    Posted on 21 January, 2008 by Anonymous

    Critical highlights that show the need for comprehensive large-scale atomistic modeling.

  2. 4.0 out of 5 stars 

    Posted on 28 February, 2007 by Martin G. Smith

    Good NEMO 3D Representation

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