Tags: quantum transport

Online Presentations (101-120 of 130)

  1. Lecture 4A: Energy Exchange and Maxwell's Demon

    02 Sep 2008 | Online Presentations | Contributor(s): Supriyo Datta

    Objective: To incorporate distributed energy exchange processes into the previous models from lectures 1 through 3 which are based on a "Landauer-like picture" where the Joule heating associated...

    http://nanohub.org/resources/5271

  2. Introduction: Nanoelectronics and the meaning of resistance

    20 Aug 2008 | Online Presentations | Contributor(s): Supriyo Datta

    This lecture provides a brief overview of the five-day short course whose purpose is to introduce a unified viewpoint for a wide variety of nanoscale electronic devices of great interest for all...

    http://nanohub.org/resources/5210

  3. Lecture 1A: What and where is the resistance?

    20 Aug 2008 | Online Presentations | Contributor(s): Supriyo Datta

    Objective: To introduce a simple quantitative model that highlights the essential parameters that determine electrical conduction: the density of states in the channel, D and the rates at...

    http://nanohub.org/resources/5211

  4. Lecture 1B: What and where is the resistance?

    20 Aug 2008 | Online Presentations | Contributor(s): Supriyo Datta

    Objective: To introduce a simple quantitative model that highlights the essential parameters that determine electrical conduction: the density of states in the channel, D and the rates at...

    http://nanohub.org/resources/5248

  5. Lecture 2A: Quantum Transport

    20 Aug 2008 | Online Presentations | Contributor(s): Supriyo Datta

    Objective: To extend the simple model from Lectures 1 into the full-fledged Non-equilibrium Green’s Function (NEGF) – Landauer model by introducing a spatial grid of N points and turning...

    http://nanohub.org/resources/5263

  6. Lecture 2B: Quantum Transport

    20 Aug 2008 | Online Presentations | Contributor(s): Supriyo Datta

    Objective: To extend the simple model from Lectures 1 into the full-fledged Non-equilibrium Green’s Function (NEGF) – Landauer model by introducing a spatial grid of N points and turning...

    http://nanohub.org/resources/5268

  7. Lecture 3A: Spin Transport

    20 Aug 2008 | Online Presentations | Contributor(s): Supriyo Datta

    Objective: To extend the model from Lectures 1 and 2 to include electron spin. Every electron is an elementary “magnet” with two states having opposite magnetic moments. Usually this has no...

    http://nanohub.org/resources/5269

  8. Lecture 3B: Spin Transport

    20 Aug 2008 | Online Presentations | Contributor(s): Supriyo Datta

    Objective: To extend the model from Lectures 1 and 2 to include electron spin. Every electron is an elementary “magnet” with two states having opposite magnetic moments. Usually this has no...

    http://nanohub.org/resources/5270

  9. Lecture 4B: Energy Exchange and Maxwell’s Demon

    20 Aug 2008 | Online Presentations | Contributor(s): Supriyo Datta

    Objective: To incorporate distributed energy exchange processes into the previous models from lectures 1 through 3 which are based on a “Landauer-like picture” where the Joule heating...

    http://nanohub.org/resources/5272

  10. Lecture 5A: Correlations and Entanglement

    20 Aug 2008 | Online Presentations | Contributor(s): Supriyo Datta

    Objective: To relate the one-electron picture used throughout these lectures to the more general but less tractable many-particle picture that underlies it. We introduce this new viewpoint using...

    http://nanohub.org/resources/5273

  11. Lecture 5B: Correlations and Entanglement

    20 Aug 2008 | Online Presentations | Contributor(s): Supriyo Datta

    Objective: To relate the one-electron picture used throughout these lectures to the more general but less tractable many-particle picture that underlies it. We introduce this new viewpoint using...

    http://nanohub.org/resources/5274

  12. Nano Carbon: From ballistic transistors to atomic drumheads

    14 May 2008 | Online Presentations | Contributor(s): Paul L. McEuen

    Carbon takes many forms, from precious diamonds to lowly graphite. Surprisingly, it is the latter that is the most prized by nano physicists. Graphene, a single layer of graphite, can serve as an...

    http://nanohub.org/resources/4398

  13. Nanoelectronic Modeling: Multimillion Atom Simulations, Transport, and HPC Scaling to 23,000 Processors

    07 Mar 2008 | Online Presentations | Contributor(s): Gerhard Klimeck

    Future field effect transistors will be on the same length scales as “esoteric” devices such as quantum dots, nanowires, ultra-scaled quantum wells, and resonant tunneling diodes. In those...

    http://nanohub.org/resources/3988

  14. MCW07 A Quantum Open Systems Approach to Molecular-Scale Devices

    25 Feb 2008 | Online Presentations | Contributor(s): Yongqiang Xue

    Experimental advances in electrically and optically probing individual molecules have provided new insights into the behavior of single quantum objects and their interaction with the...

    http://nanohub.org/resources/3090

  15. MCW07 Physics of Contact Induced Current Asymmetry in Transport Through Molecules

    25 Feb 2008 | Online Presentations | Contributor(s): Bhaskaran Muralidharan, Owen D. Miller, Neeti Kapur, Avik Ghosh, Supriyo Datta

    We first outline the qualitatively different physics involved in the charging-induced current asymmetries in molecular conductors operating in the strongly coupled (weakly interacting)...

    http://nanohub.org/resources/3073

  16. Exploring Physical and Chemical control of molecular conductance: A computational study

    01 Feb 2008 | Online Presentations | Contributor(s): Barry D. Dunietz

    http://nanohub.org/resources/3945

  17. Can numerical “experiments” INSPIRE physical experiments?

    20 Dec 2007 | Online Presentations | Contributor(s): Supriyo Datta

    This presentation was one of 13 presentations in the one-day forum, "Excellence in Computer Simulation," which brought together a broad set of experts to reflect on the future of...

    http://nanohub.org/resources/3716

  18. NanoElectronic MOdeling: NEMO

    20 Dec 2007 | Online Presentations | Contributor(s): Gerhard Klimeck

    This presentation was one of 13 presentations in the one-day forum, "Excellence in Computer Simulation," which brought together a broad set of experts to reflect on the future of computational...

    http://nanohub.org/resources/3707

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

    06 Nov 2007 | Online Presentations | 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.

    http://nanohub.org/resources/3504

  20. MCW07 Modeling Molecule-Assisted Transport in Nanotransistors

    06 Nov 2007 | Online Presentations | Contributor(s): Kamil Walczak

    Molecular electronics faces many problems in practical device implementation, due to difficulties with fabrication and gate-ability. In these devices, molecules act as the main conducting channel....

    http://nanohub.org/resources/3074