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In solid-state physics, the electronic band structure of a solid describes ranges of energy that an electron is "forbidden" or "allowed" to have. It is a function of the diffraction of the quantum mechanical electron waves in the periodic crystal lattice with a specific crystal system and Bravais lattice. The band structure of a material determines several characteristics, in particular its electronic and optical properties. More information on Band structure can be found here.
1D Heterostructure Tool
04 Aug 2008 | | Contributor(s):: Arun Goud Akkala, Sebastian Steiger, Jean Michel D Sellier, Sunhee Lee, Michael Povolotskyi, Tillmann Christoph Kubis, Hong-Hyun Park, Samarth Agarwal, Gerhard Klimeck, James Fonseca, Archana Tankasala, Kuang-Chung Wang, Chin-Yi Chen, Fan Chen
Poisson-Schrödinger Solver for 1D Heterostructures
2010 NCN@Purdue Summer School: Electronics from the Bottom Up
20 Apr 2010 |
Electronics from the Bottom Up seeks to bring a new perspective to electronic devices – one that is designed to help realize the opportunities that nanotechnology presents.
Band structure error in InAs UTB devices
Closed | Responses: 0
first of all, I would like to thank you to have developed and made available online this tool.
Currently, I’m interested in the study of the band structure of http://nanohub.org/answers/question/1328
What would be the electron effective mass of InAs in its electron valleys in X,Y,Z directions?
Open | Responses: 1
The default values in the Multi gate Nanowire tool for Si effective mass in Valley 1,2,3 in x,y,z directions are
0.19,0.19,0.98; 0.19,0.98,0.19; 0.98,0.19,0.19 respectively.
Now if i am going to...
A Tutorial for Nanoelectronics Simulation Tools
out of 5 stars
03 Jul 2007 | | Contributor(s):: James K Fodor, Jing Guo
This learning module introduces nanoHUB users to some of the available simulators. The simulators discussed are FETToy, nanoMOS, Schred, CNTbands, and QDot Lab. For each simulator, a brief introduction to the simulator is presented, followed by voiced presentations featuring the simulator in...
ABACUS - Assembly of Basic Applications for Coordinated Understanding of Semiconductors
16 Jul 2008 | | Contributor(s):: Xufeng Wang, Dragica Vasileska, Gerhard Klimeck
One-stop-shop for teaching semiconductor device education
ABACUS Exercise: Bandstructure – Kronig-Penney Model and Tight-Binding Exercise
20 Jul 2010 | | Contributor(s):: Dragica Vasileska, Gerhard Klimeck
The objective of this exercise is to start with the simple Kronig-Penney model and understand formations of bands and gaps in the dispersion relation that describes the motion of carriers in 1D periodic potentials. The second exercise examines the behavior of the bands at the Brillouin zone...
ABACUS: Test for Bandstructure Lab
09 Aug 2010 | | Contributor(s):: Dragica Vasileska, Gerhard Klimeck
This is a test that examines ones understanding of electronic structure once he/she has gone through the materials and exercises provided on the nanoHUB as part of the ABACUS Bandstructure topic page and running the Bandstructure Lab.
ABINIT: First-Time User Guide
09 Jun 2009 | | Contributor(s):: Benjamin P Haley
This first-time user guide provides an introduction to using ABINIT on nanoHUB. We include a very brief summary of Density Functional Theory along with a tour of the Rappture interface. We discuss the default simulation (what happens if you don't change any inputs, and just hit "simulate") as...
ACUTE - Bandstructure Assignment
07 Jul 2011 | | Contributor(s):: Dragica Vasileska, Gerhard Klimeck
This is assignment that is part of the ACUTE tool-based curricula that guides the students step by step how to implement an empirical pseudopotential method for the bandstructure calculation.
Additional Tutorials on Selected Topics in Nanotechnology
23 Mar 2011 | | Contributor(s):: Gerhard Klimeck, Umesh V. Waghmare, Timothy S Fisher, N. S. Vidhyadhiraja
Select tutorials in nanotechnology, a part of the 2010 NCN@Purdue Summer School: Electronics from the Bottom Up.
Antonio Carlos Pedroza
AQME - Advancing Quantum Mechanics for Engineers
12 Aug 2008 | | Contributor(s):: Gerhard Klimeck, Xufeng Wang, Dragica Vasileska
One-stop-shop for teaching quantum mechanics for engineers
AQME Advancing Quantum Mechanics for Engineers
Introduction to Advancing Quantum Mechanics for Engineers and Physicists
“Advancing Quantum Mechanics for Engineers” (AQME) toolbox is an assemblage of individually authored tools...
Atomistic Alloy Disorder in Nanostructures
26 Feb 2007 | | Contributor(s):: Gerhard Klimeck
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...
Band Structure Calculation: General Considerations
17 May 2010 | | Contributor(s):: Dragica Vasileska
This set of slides explains to the users the concept of valence vs. core electrons, the implications of the adiabatic approximation on the separation of the total Hamiltonian of the system and the mean-field approximation used in ab initio bandstructure approaches. It then gives systematic...
Band Structure Lab Demonstration: Bulk Strain
12 Jun 2009 | | Contributor(s):: Gerhard Klimeck
This video shows an electronic structure calculation of bulk Si using Band Structure Lab. Several powerful features of this tool are demonstrated.
Band Structure Lab Exercise
28 Jun 2010 | | Contributor(s):: Gerhard Klimeck, Parijat Sengupta, Dragica Vasileska
Investigations of the electron energy spectra of solids form one of the most active fields of research. Knowledge of band theory is essential for application to specific problems such as Gunn diodes, tunnel diodes, photo-detectors etc. There are several standard methods to compute the band...
Band Structure Lab: First-Time User Guide
15 Jun 2009 | | Contributor(s):: Abhijeet Paul, Benjamin P Haley, Gerhard Klimeck
This document provides useful information about Band Structure Lab. First-time users will find basic ideas about the physics behind the tool such as band formation, the Hamiltonian description, and other aspects. Additionally, we provide explanations of the input settings and the results of the...