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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.
InAs: Evolution of iso-energy surfaces for heavy, light, and split-off holes due to uniaxial strain.
25 May 2010 | Animations | Contributor(s): Abhijeet Paul, Denis Areshkin, Gerhard Klimeck
Movie was generated using Band Structure Lab tool at nanoHUB and allows to scan over four parameters:
Hole energy measured from the top of the corresponding band (i.e. the origin of energy...
Band Structure Calculation: General Considerations
17 May 2010 | Teaching Materials | 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...
Empirical Pseudopotential Method: Theory and Implementation
This tutorial first teaches the users the basic theory behind the Empirical Pseudopotential (EPM)Bandstructure Calculation method. Next, the implementation details of the method are described and...
13 May 2010 | Downloads | Contributor(s): Chanaka Suranjith Rupasinghe, Mufthas Rasikim
ninithi which is a free and opensource modelling software, can be used to visualize and analyze carbon allotropes used in nanotechnology. You can generate 3-D visualization of Carbon nanotubes,...
Nanotechnology Animation Gallery
22 Apr 2010 | Teaching Materials | Contributor(s): Saumitra Raj Mehrotra, Gerhard Klimeck
Animations and visualization are generated with various nanoHUB.org tools to enable insight into nanotechnology and nanoscience. Click on image for detailed description and larger image download....
Electronic band structure
12 Apr 2010 | Animations | Contributor(s): Saumitra Raj Mehrotra, Gerhard Klimeck
In solid-state physics, the electronic band structure (or simply band structure) of a solid describes ranges of energy in which an electron is "forbidden" or "allowed". The band structure is...
Nanoelectronic Modeling Lecture 25b: NEMO1D - Hole Bandstructure in Quantum Wells and Hole Transport in RTDs
09 Mar 2010 | Online Presentations | Contributor(s): Gerhard Klimeck
Heterostructures such as resonant tunneling diodes, quantum well photodetectors and lasers, and cascade lasers break the symmetry of the crystalline lattice. Such break in lattice symmetry...
Nanoelectronic Modeling Lecture 26: NEMO1D -
NEMO1D demonstrated the first industrial strength implementation of NEGF into a simulator that quantitatively simulated resonant tunneling diodes. The development of efficient algorithms that...
Bulk Bandstructure in MATLAB: Pseudopotential Method
08 Feb 2010 | Downloads | Contributor(s): Muhanad Zaki
This code (MATLAB) readily calculates and plots the bandstructure of Silicon (bulk) using the empirical pseudopotential method.
Detailed instructions are in the compressed archive.
I hope it...
Tillmann Christoph Kubis
nanoMATERIALS SeqQuest DFT
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01 Feb 2010 | Tools | Contributor(s): Ravi Pramod Kumar Vedula, Greg Bechtol, Benjamin P Haley, Alejandro Strachan
DFT calculations of materials
Illinois ECE 440: Diffusion and Energy Band Diagram Homework
28 Jan 2010 | Teaching Materials | Contributor(s): Mohamed Mohamed
This homework covers Diffusion of Carriers, Built-in Fields and Metal semiconductor junctions.
Nanoelectronic Modeling: Exercises 1-3 - Barrier Structures, RTDs, and Quantum Dots
27 Jan 2010 | Online Presentations | Contributor(s): Gerhard Klimeck
Uses: Piece-Wise Constant Potential Barrier Tool
Resonant Tunneling Diodes
Uses: Resonant Tunneling Diode Simulation with NEGF
• Hartree calculation
Nanoelectronic Modeling Lecture 14: Open 1D Systems - Formation of Bandstructure
27 Jan 2010 | Online Presentations | Contributor(s): Gerhard Klimeck, Dragica Vasileska
The infinite periodic structure Kroenig Penney model is often used to introduce students to the concept of bandstructure formation. It is analytically solvable for linear potentials and shows...
Nanoelectronic Modeling Lecture 12: Open 1D Systems - Transmission through Double Barrier Structures - Resonant Tunneling
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...
Nanoelectronic Modeling Lecture 08: Introduction to Bandstructure Engineering II
25 Jan 2010 | Online Presentations | Contributor(s): Gerhard Klimeck
This presentation provides a brief overview of the concepts of bandstructure engineering and its potential applications to light detectors, light emitters, and electron transport devices. ...
Nanoelectronic Modeling Lecture 07: Introduction to Bandstructure Engineering I
This presentation serves as a reminder about basic quantum mechanical principles without any real math. The presentation reviews critical properties of classical systems that can be described as...
Low Bias Transport in Graphene: An Introduction (lecture notes)
22 Sep 2009 | Presentation Materials | Contributor(s): Mark Lundstrom, Tony Low, Dionisis Berdebes
These notes complement a lecture with the same title presented by Mark Lundstrom and Dionisis Berdebes, at the NCN@Purdue Summer School, July 20-24, 2009.
Metal Oxide Nanowires as Gas Sensing Elements: from Basic Research to Real World Applications
21 Sep 2009 | Online Presentations | Contributor(s): Andrei Kolmakov
Quasi 1-D metal oxide single crystal chemiresistors are close to occupy their specific niche in the real world of solid state sensorics. Potentially, the major advantage of this kind of sensors...