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 (81-100 of 135)

  1. Learning Module: Band Structure for Pure and Doped Silicon

    10 Dec 2018 | | Contributor(s):: Peilin Liao

    In this lab, students will learn to perform online density functional theory (DFT) simulations to compute band structures and density of states (DOS) for pure and doped Si using the DFT Material Properties Simulator available on nanoHUB. The students will work with crystalline pure and doped...

  2. Learning Module: Bonding and Band Structure in Silicon

    The main goal of this learning module is to help students learn about the correlation between atomic structure and electronic properties, and help them develop a more intuitive understanding of the...

    http://nanohub.org/wiki/LearningModuleSiliconBandstructureDFT

  3. Lecture 3: Low Bias Transport in Graphene: An Introduction

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

    Outline:Introduction and ObjectivesTheoryExperimental approachResultsDiscussionSummaryLecture notes are available for this lecture.

  4. Low Bias Transport in Graphene: An Introduction (lecture notes)

    22 Sep 2009 | | 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.

  5. MATLAB Scripts for "Quantum Transport: Atom to Transistor"

    15 Mar 2005 | | Contributor(s):: Supriyo Datta

    Tinker with quantum transport models! Download the MATLAB scripts used to demonstrate the physics described in Supriyo Datta's book Quantum Transport: Atom to Transistor. These simple models are less than a page of code, and yet they reproduce much of the fundamental physics observed in...

  6. 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 systems,...

  7. 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...

  8. ME 597 Lecture 1: Introduction to Basic Quantum Mechanics

    01 Sep 2009 | | Contributor(s):: Ron Reifenberger

    Note: This lecture has been revised since its original presentation.Topics:Introduction to Basic Quantum MechanicsEnergy States in Periodic Crystals

  9. Metal Oxide Nanowires as Gas Sensing Elements: from Basic Research to Real World Applications

    21 Sep 2009 | | 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 with respect to available granular thin film sensors will be their size and stable, reproducible and...

  10. MIT Atomic-Scale Modeling Toolkit

    15 Jan 2008 | | Contributor(s):: daniel richards, Elif Ertekin, Jeffrey C Grossman, David Strubbe, Justin Riley

    Tools for Atomic-Scale Modeling

  11. MSL Simulator

    17 Jun 2005 | | Contributor(s):: Kyeongjae Cho

    Easy-to-use interface for designing and analyzing electronic properties of different nano materials

  12. Nanoelectronic Modeling Lecture 07: Introduction to Bandstructure Engineering I

    30 Dec 2009 | | Contributor(s):: Gerhard Klimeck

    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 particles, propagating waves, standing waves, and chromatography.

  13. Nanoelectronic Modeling Lecture 08: Introduction to Bandstructure Engineering II

    30 Dec 2009 | | 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. Critical questions of the origin of bandstructure and its dependence on local atom arrangements are raised to...

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

    25 Jan 2010 | | 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 quasi bound state, and the bound state can be related to a simple particle in a box calculation.

  15. Nanoelectronic Modeling Lecture 14: Open 1D Systems - Formation of Bandstructure

    25 Jan 2010 | | 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 critical elements of bandstructure formation such as core bands and different effective masses in...

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

    02 Mar 2010 | | Contributor(s):: Gerhard Klimeck

    (quantitative RTD modeling at room temperature)

  17. Nanoelectronic Modeling Lecture 25b: NEMO1D - Hole Bandstructure in Quantum Wells and Hole Transport in RTDs

    02 Mar 2010 | | 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 causes a strong interaction of heavy-, light- and split-off hole bands. The bandstructure of holes and the...

  18. Nanoelectronic Modeling Lecture 26: NEMO1D -

    02 Mar 2010 | | 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 simulate scattering from polar optical phonons, acoustic phonons, alloy disorder, and interface roughness...

  19. Nanoelectronic Modeling Lecture 33: Alloy Disorder in Bulk

    07 Jul 2010 | | Contributor(s):: Gerhard Klimeck, Timothy Boykin, Chris Bowen

    This presentation discusses disorder in AlGaAs unstrained systems in bulk. Bandstructure of an ideal simple unit cellWhat happens when there is disorder?Concept of a supercellBand folding in a supercellBand extraction from the concept of approximate bandstructureComparison of alloy disorder with...

  20. Nanoelectronic Modeling Lecture 34: Alloy Disorder in Quantum Dots

    07 Jul 2010 | | Contributor(s):: Gerhard Klimeck, Timothy Boykin, Chris Bowen

    This presentation discusses the consequences of Alloy Disorder in strained InGaAs Quantum Dots Reminder of the origin of bandstructure and bandstructure engineeringWhat happens when there is disorder?Concept of disorder in the local bandstructureConfiguration noise, concentration noise,...