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.

All Categories (101-120 of 133)

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

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

    Exercises:Barrier StructuresUses: Piece-Wise Constant Potential Barrier ToolResonant Tunneling DiodesUses: Resonant Tunneling Diode Simulation with NEGF • Hartree calculation • Thomas Fermi potentialQuantum DotsUses: Quantum Dot Lab • pyramidal dot

  2. Nanoelectronics/Mechanics With Carbon Nanotubes

    26 Feb 2004 |

    In this talk, I will present efforts to understand electrical/mechanical properties of carbon nanotubes (CNTs) by combining electric transport measurements and the scanning probe microscopy.

  3. nanoMATERIALS SeqQuest DFT

    04 Feb 2008 | | Contributor(s):: Ravi Pramod Kumar Vedula, Greg Bechtol, Benjamin P Haley, Alejandro Strachan

    DFT calculations of materials

  4. Nanotechnology Animation Gallery

    20 Apr 2010 | | 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. Additional animations are also available Featured nanoHUB tools: Band Structure Lab. Carrier...

  5. NEMO5 and 2D Materials: Tuning Bandstructures, Wave Functions and Electrostatic Screening

    18 Oct 2016 | | Contributor(s):: Tillmann Christoph Kubis

    In this talk, I will briefly discuss the MLWF approach and compare it to DFT and atomistic tight binding. Initial results using the MLWF approach for 2D material based devices will be discussed and compared to experiments. These results unveil systematic band structure changes as functions of...

  6. NEMO5 Overview Presentation

    17 Jul 2012 | | Contributor(s):: Tillmann Christoph Kubis, Michael Povolotskyi, Jean Michel D Sellier, James Fonseca, Gerhard Klimeck

    This presentation gives an overview of the current functionality of NEMO5.

  7. NEMO5, a Parallel, Multiscale, Multiphysics Nanoelectronics Modeling Tool


    16 Sep 2016 | | Contributor(s):: Gerhard Klimeck

    The Nanoelectronic Modeling tool suite NEMO5 is aimed to comprehend the critical multi-scale, multi-physics phenomena and deliver results to engineers, scientists, and students through efficient computational approaches. NEMO5’s general software framework easily includes any kind of...

  8. NEMO5, a Parallel, Multiscale, Multiphysics Nanoelectronics Modeling Tool
: From Basic Physics to Real Devices and to Global Impact on nanoHUB.org

    10 Nov 2016 | | Contributor(s):: Gerhard Klimeck

    The Nanoelectronic Modeling tool suite NEMO5 is aimed to comprehend the critical multi-scale, multi-physics phenomena and deliver results to engineers, scientists, and students through efficient computational approaches. NEMO5’s general software framework easily includes any kind of...

  9. ninithi

    07 May 2010 | | 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, Fullerenes, Graphene and Carbon nanoribbons and analyze the band structures of nanotubes and graphene.

  10. Periodic Potential Lab: First-Time User Guide

    05 Jun 2009 | | Contributor(s):: Abhijeet Paul, Benjamin P Haley, Gerhard Klimeck, SungGeun Kim, Lynn Zentner

    This document provides guidance to first-time users of the Periodic Potential Lab tool. It offers basic information about solutions to the Schröedinger Equation in case of periodic potential in 1 dimension (1D). This document also contains suggested exercises to help users run the tool and...

  11. Periodic Potentials and Bandstructure: an Exercise

    02 Jul 2008 | | Contributor(s):: Dragica Vasileska, Gerhard Klimeck

    This exercise teaches the students that in the case of strong coupling between the neighboring wells in square and Coulomb periodic potential wells electrons start to behave as free electrons and the gaps that open at the Brillouin zone boundaries become smaller and smaller (thus recovering the...

  12. Periodic Potentials and the Kronig-Penney Model

    01 Jul 2008 | | Contributor(s):: Dragica Vasileska

    This material describes the derivation of the Kronig-Penney model for delta-function periodic potentials.

  13. PHYS 620 Lecture 5: Diamond and Zincblende Semiconductors: Band Structure

    13 Feb 2013 | | Contributor(s):: Roberto Merlin

  14. Piece-Wise Constant Potential Barriers Tool Demonstration: Bandstructure Formation with Finite Superlattices

    03 Jun 2009 | | Contributor(s):: Gerhard Klimeck, Benjamin P Haley

    This video shows the simulation and analysis of a systems with a series of potential barriers. Several powerful analytic features of Piece-wise Constant Potential Barrier Tool (PCPBT) are demonstrated.

  15. Ripples and Warping of Graphene: A Theoretical Study

    19 May 2010 | | 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 with a low energy branch of phonons that exhibits quadratic dispersion at long wave-lengths. Many...

  16. Si band structure sequence

    Collections | 30 Oct 2016 | Posted by Tanya Faltens

    http://nanohub.org/groups/materials/collections/saved-materials-science-runs

  17. SIESTA

    05 Mar 2008 | | Contributor(s):: Lucas Wagner, Jeffrey C Grossman, Joe Ringgenberg, daniel richards, Alexander S McLeod, Eric Isaacs, Jeffrey B. Neaton

    Use SIESTA to perform electronic structure calculations

  18. Simple Photonic Crystals

    16 Aug 2007 | | Contributor(s):: Jing Ouyang, Xufeng Wang, Minghao Qi

    Photonic Crystal characteristics in an easy way

  19. Simplified Band-Structure Model

    02 Jun 2006 | | Contributor(s):: Dragica Vasileska

    Solid-State Theory and Semiconductor Transport Fundamentals

  20. StrainBands

    15 Jun 2007 | | Contributor(s):: Joe Ringgenberg, Joydeep Bhattacharjee, Jeffrey B. Neaton, Jeffrey C Grossman, Eric Schwegler

    Explore the influence of strain on first-principles bandstructures of semiconductors.