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.

Online Presentations (41-60 of 66)

  1. ECE 656 Lecture 2: Sums in k-space/Integrals in Energy Space

    01 Sep 2009 | | Contributor(s):: Mark Lundstrom

    Outline:Density of states in k-space Example Working in energy space Discussion Summary

  2. ECE 656 Lecture 1: Bandstructure Review

    26 Aug 2009 | | Contributor(s):: Mark Lundstrom

    Outline:Bandstructure in bulk semiconductorsQuantum confinementSummary

  3. Comparison of PCPBT Lab and Periodic Potential Lab

    10 Aug 2009 | | Contributor(s):: Abhijeet Paul, Samarth Agarwal, Gerhard Klimeck, Junzhe Geng

    This small presentation provides information about the comparison performed for quantum wells made of GaAs and InAs in two different tools. This has been done to benchmark the results from completely two different sets of tools and validate the obtained results. In this presentation we provide...

  4. ECE 606 Lecture 10: Additional Information

    16 Feb 2009 | | Contributor(s):: Muhammad A. Alam

    Outline:Potential, field, and chargeE-k diagram vs. band-diagramBasic concepts of donors and acceptorsConclusion

  5. ECE 606 Lecture 13a: Fermi Level Differences for Metals and Semiconductors

    16 Feb 2009 | | Contributor(s):: Muhammad A. Alam

    Short chalkboard lecture on Fermi level and band diagram differences for metals and semiconductors.

  6. ECE 606 Lecture 5: Energy Bands

    04 Feb 2009 | | Contributor(s):: Muhammad A. Alam

    Outline:Schrodinger equation in periodic U(x)Bloch theoremBand structureProperties of electronic bandsConclusions

  7. ECE 495N Lecture 21: Graphene Bandstructures

    03 Nov 2008 | | Contributor(s):: Supriyo Datta

  8. ECE 495N Lecture 19: Bandstructures II

    03 Nov 2008 | | Contributor(s):: Supriyo Datta

  9. ECE 495N Lecture 18: Bandstructures I

    03 Nov 2008 | | Contributor(s):: Supriyo Datta

  10. ECE 495N Lecture 20: Bandstructures III

    27 Oct 2008 | | Contributor(s):: Supriyo Datta

  11. The Novel Nanostructures of Carbon

    28 Feb 2008 | | Contributor(s):: Gene Dresselhaus

    A brief review will be given of the physical underpinnings of carbon nanostructures that were developed over the past 60 years, starting with the electronic structure and physical properties of graphene and graphite, and then moving to graphite intercalation compounds which contained the first...

  12. Engineering at the nanometer scale: Is it a new material or a new device?

    06 Nov 2007 | | Contributor(s):: Gerhard Klimeck

    This seminar will overview NEMO 3D simulation capabilities and its deployment on the nanoHUB as well as an overview of the nanoHUB impact on the community.

  13. MCW07 Impact of Porphyrin Functional Groups on InAs Gas Sensors

    05 Nov 2007 | | Contributor(s):: Michael Garcia

    Porphyrin molecules are often used for sensor engineering to improve sensitivity and selectivity to specific analytes. It is important to understand how the porphyrin HOMO-LUMO levels deplete surface states during functionalization of solid state sensors. Additionally, the effect of...

  14. MCW07 Electronic Level Alignment at Metal-Molecule Contacts with a GW Approach

    05 Sep 2007 | | Contributor(s):: Jeffrey B. Neaton

    Most recent theoretical studies of electron transport in single-molecule junctions rely on a Landauer approach, simplified to treat electron-electron interactions at a mean-field level within density functional theory (DFT). While this framework has proven relatively accurate for certain...

  15. A Tutorial for Nanoelectronics Simulation Tools

    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...

  16. 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...

  17. Energy Bands In Periodic Potentials

    11 Jan 2007 | | Contributor(s):: Heng Li

    It is the Kronig-Penny Model.The particle in one-dimensional lattice is a problem that occurs in the model of periodic crystal lattice.The potential is caused by periodic arrangement of ions in the crystal structure. The graph presents the real part of transmission matrix element P11 plotted...

  18. Surprises on the nanoscale: Plasmonic waves that travel backward and spin birefringence without magnetic fields

    08 Jan 2007 | | Contributor(s)::

    As nanonphotonics and nanoelectronics are pushed down towards the molecular scale, interesting effects emerge. We discuss how birefringence (different propagation of two polarizations) is manifested and could be useful in the future for two systems: coherent plasmonic transport of near-field...

  19. ECE 659 Lecture 19: Band Structure: Prelude to Sub-Bands

    24 Feb 2003 | | Contributor(s):: Supriyo Datta

    Reference Chapter 5.2

  20. ECE 659 Lecture 18: Band Structure: 3-D Solids

    24 Feb 2003 | | Contributor(s):: Supriyo Datta

    Reference Chapter 5.3