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30 Jul 2011 | Contributor(s):: Dragica Vasileska, Gerhard Klimeck
This set of slides describes the quantum-mechanical process for tunneling and how it is accounted for in modeling semiconductor devices. We explain WKB approximation, transfer matrix approach and the Tsu-Esaki formula for the calculation of the current.
K-12: Introduction to Quantum Wells
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24 Nov 2008 | | 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 to understand the basic functions and concepts of quantum wells and tunneling.* Students will be able...
Tunneling Through Triangular Barrier: an Exercise for PCPBT
23 Jul 2008 | | 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.www.eas.asu.edu/~vasileskNSF
Slides: WKB Approximation Applications
09 Jul 2008 | | Contributor(s):: Dragica Vasileska, Gerhard Klimeck
Reading Material: Tunneling
08 Jul 2008 | | Contributor(s):: Dragica Vasileska
Computational Nanoscience, Lecture 26: Life Beyond DFT -- Computational Methods for Electron Correlations, Excitations, and Tunneling Transport
16 May 2008 | | 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 the self-energy corrects the quasiparticle excitations energies predicted by Kohn-Sham DFT. For...
Finite Height Quantum Well: an Exercise for Band Structure
31 Jan 2008 | | 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 thick barriers and a 7 nm quantum well, determine the energies of the two lowest quasi-bound states.