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Periodic Potential Lab

By Abhijeet Paul1, Junzhe Geng1, Gerhard Klimeck1

1. Purdue University

Solve the time independent schrodinger eqn. for arbitrary periodic potentials

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This tool version is unpublished and cannot be run. If you would like to have this version staged, you can put a request through HUB Support.

Archive Version 1.0.5
Published on 15 Jun 2009, unpublished on 07 Jul 2009
Latest version: 1.1.2. All versions

doi:10.4231/D3G737365 cite this

This tool is closed source.



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The Periodic Potential Lab solves the time independent Schroedinger Equation in a 1-D spatial potential variation. The user can determine energetic and spatial details of the potential profiles, compute the allowed and forbidden bands, plot the bands in a compact and an expanded zone, and compare the results against a simple effective mass parabolic band. Transmission is also calculated through the well for the given energy range.

Types of 1D periodic Potential in the tool:

Rectangular Potential Triangular Potential Parabolic (harmonic)Potential Coulombic Potential Sinosoidal Potential

Recent Changes and BugFixes:

Version 1.0.4

Added predefined material masses, such as GaAs, InAs, InP. Reduced the maximum barrier height to a lower value in square well case. Version 1.0.5 Wavefunction plot added to the output. Completes this wish

  • % Wavefunction probability plot added to the output. Completes this wish New Sinosoidal Periodic potential added to the tool. Now the tool provides a log of the steps run in the tool. Need to put the error messages if the tool fails to generate any result.

    Bugs and known Issues: Effective masses come out wrong in some case. Working to fix this. Allowed energy bands sometimes miss some bands.

    First Time User Guide This document explains some important details about the tool and details to use the tool. This is very useful if you are running the tool for the first time or want to understand the basic science behind the tool.

    Other useful documents: A list of some other useful documents associated with this tool. Quantum Mechanics: Periodic Potentials and Kronig-Penney Model Link Kronig-Penney Model Explained . Simplified Band-Structure Model Link.

    WishList : See all the wishes here and add your wishes too.

  • Tags, a resource for nanoscience and nanotechnology, is supported by the National Science Foundation and other funding agencies. Any opinions, findings, and conclusions or recommendations expressed in this material are those of the author(s) and do not necessarily reflect the views of the National Science Foundation.