Tags: band structure

Description

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.

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  1. ABACUS Exercise: Bandstructure – Kronig-Penney Model and Tight-Binding Exercise

    20 Jul 2010 | Teaching Materials | 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...

    https://nanohub.org/resources/9372

  2. Nanoelectronic Modeling Lecture 25a: NEMO1D - Full Bandstructure Effects

    07 Jul 2010 | Online Presentations | Contributor(s): Gerhard Klimeck

    (quantitative RTD modeling at room temperature)

    https://nanohub.org/resources/8594

  3. Band Structure Lab Exercise

    28 Jun 2010 | Teaching Materials | 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...

    https://nanohub.org/resources/9233

  4. Ripples and Warping of Graphene: A Theoretical Study

    08 Jun 2010 | Online Presentations | Contributor(s): Umesh V. Waghmare

    We use first-principles density functional theory based analysis to understand formation of ripples in graphene and related 2-D materials. For an infinite graphene, we show that ripples are linked...

    https://nanohub.org/resources/9010

  5. Tight-Binding Band Structure Calculation Method

    08 Jun 2010 | Teaching Materials | Contributor(s): Dragica Vasileska, Gerhard Klimeck

    This set of slides describes on simple example of a 1D lattice, the basic idea behind the Tight-Binding Method for band structure calculation.

    https://nanohub.org/resources/9122

  6. 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...

    https://nanohub.org/resources/9016

  7. 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...

    https://nanohub.org/resources/9003

  8. Empirical Pseudopotential Method: Theory and Implementation

    17 May 2010 | Teaching Materials | Contributor(s): Dragica Vasileska

    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...

    https://nanohub.org/resources/8999

  9. ninithi

    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,...

    https://nanohub.org/resources/8987

  10. 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....

    https://nanohub.org/resources/8882

  11. 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...

    https://nanohub.org/resources/8814

  12. 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...

    https://nanohub.org/resources/8595

  13. Nanoelectronic Modeling Lecture 26: NEMO1D -

    09 Mar 2010 | Online Presentations | Contributor(s): Gerhard Klimeck

    NEMO1D demonstrated the first industrial strength implementation of NEGF into a simulator that quantitatively simulated resonant tunneling diodes. The development of efficient algorithms that...

    https://nanohub.org/resources/8596

  14. 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...

    https://nanohub.org/resources/8405

  15. Tillmann Christoph Kubis

    https://nanohub.org/members/41945

  16. nanoMATERIALS SeqQuest DFT

    01 Feb 2010 | Tools | Contributor(s): Ravi Pramod Kumar Vedula, Greg Bechtol, Benjamin P Haley, Alejandro Strachan

    DFT calculations of materials

    https://nanohub.org/resources/nmst_dft

  17. 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.

    https://nanohub.org/resources/8264

  18. Nanoelectronic Modeling: Exercises 1-3 - Barrier Structures, RTDs, and Quantum Dots

    27 Jan 2010 | Online Presentations | Contributor(s): Gerhard Klimeck

    Exercises: Barrier Structures Uses: Piece-Wise Constant Potential Barrier Tool Resonant Tunneling Diodes Uses: Resonant Tunneling Diode Simulation with NEGF • Hartree calculation •...

    https://nanohub.org/resources/8259

  19. 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...

    https://nanohub.org/resources/8197

  20. Nanoelectronic Modeling Lecture 12: Open 1D Systems - Transmission through Double Barrier Structures - Resonant Tunneling

    27 Jan 2010 | Online Presentations | Contributor(s): Gerhard Klimeck, Dragica Vasileska

    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...

    https://nanohub.org/resources/8195