Tags: quantum transport

Resources (181-200 of 250)

  1. Quantum and Thermal Effects in Nanoscale Devices

    18 Sep 2008 | | Contributor(s):: Dragica Vasileska

    To investigate lattice heating within a Monte Carlo device simulation framework, we simultaneously solve the Boltzmann transport equation for the electrons, the 2D Poisson equation to get the self-consistent fields and the hydrodynamic equations for acoustic and optical phonons. The phonon...

  2. ECE 495N Lecture 7: Quantum Capacitance/Shrödinger's Equation

    17 Sep 2008 | | Contributor(s):: Supriyo Datta

  3. Lecture 6: Quantum Transport in Nanoscale FETs

    12 Sep 2008 | | Contributor(s):: Mark Lundstrom

    The previous lessons developed an analytical (or almost analytical) theory of the nanoscale FET, but to properly treat all the details, rigorous computer simulations are necessary. This lecture presents quantum transport simulations that display the internal physics of nanoscale MOSFETs. We use...

  4. Nanoelectronics and the meaning of resistance: Course Handout and Exercises

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

    Handout with reference list, MATLAB scripts and exercise problems.

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

    02 Sep 2008 | | 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 with current flow occurs entirely in the two contacts.Although there is experimental evidence that...

  6. ECE 495N: Fundamentals of Nanoelectronics

    28 Aug 2008 | | Contributor(s):: Supriyo Datta

    Fall 2008 This is a newly produced version of the course that was formerly available. We would greatly appreciate your feedback regarding the new format and contents. Objective: To convey the basic concepts of nanoelectronics to electrical engineering students with no background in...

  7. ACUTE

    17 Aug 2008 | | Contributor(s):: Dragica Vasileska, Gerhard Klimeck, Xufeng Wang, Stephen M. Goodnick

    This tool is used for the Advanced Computational Electronics Tool Based Curricula

  8. Introduction: Nanoelectronics and the meaning of resistance

    20 Aug 2008 | | 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 kinds of applications including switching, energy conversion and sensing. Our objective, however, is...

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

    20 Aug 2008 | | 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 which electrons hop in and out of the two contacts, labeled source and drain. This model is used to explain...

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

    20 Aug 2008 | | 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 which electrons hop in and out of the two contacts, labeled source and drain. This model is used to explain...

  11. Lecture 2A: Quantum Transport

    20 Aug 2008 | | 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 numbers like into (NxN) matrices like , with incoherent scattering introduced through . This model will be...

  12. Lecture 2B: Quantum Transport

    20 Aug 2008 | | 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 numbers like into (NxN) matrices like , with incoherent scattering introduced through . This model will be...

  13. Lecture 3A: Spin Transport

    20 Aug 2008 | | 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 major effect on device operation except to increase the conductance by a factor of two.But it is now...

  14. Lecture 3B: Spin Transport

    20 Aug 2008 | | 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 major effect on device operation except to increase the conductance by a factor of two.But it is now...

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

    20 Aug 2008 | | 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 with current flow occurs entirely in the two contacts.Although there is experimental evidence that...

  16. Lecture 5A: Correlations and Entanglement

    20 Aug 2008 | | 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 the example of Coulomb blockaded electronic devices that are difficult to model within the picture...

  17. Lecture 5B: Correlations and Entanglement

    20 Aug 2008 | | 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 the example of Coulomb blockaded electronic devices that are difficult to model within the picture...

  18. Nanoelectronics and the Meaning of Resistance

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

    The purpose of this series of lectures is to introduce the "bottom-up" approach to nanoelectronics using concrete examples. No prior knowledge of quantum mechanics or statistical mechanics is assumed; however, familiarity with matrix algebra will be helpful for some topics. Day 1: What...

  19. ABACUS - Assembly of Basic Applications for Coordinated Understanding of Semiconductors

    16 Jul 2008 | | Contributor(s):: Xufeng Wang, Daniel Mejia, Dragica Vasileska, Gerhard Klimeck

    One-stop-shop for teaching semiconductor devices

  20. Piece-Wise Constant Potential Barriers Tool

    30 Jun 2008 | | Contributor(s):: Xufeng Wang, Samarth Agarwal, Gerhard Klimeck, Dragica Vasileska, Mathieu Luisier, Jean Michel D Sellier

    Transmission and the reflection coefficient of a five, seven, nine, eleven and 2n-segment piece-wise constant potential energy profile