Tags: Charge Transport

Online Presentations (61-80 of 85)

  1. ECE 656 Lecture 23: Phonon Scattering I

    10 Nov 2009 | Online Presentations | Contributor(s): Mark Lundstrom

    Outline: About phonons Electron-phonon coupling Energy-momentum conservation Summary

    https://nanohub.org/resources/7780

  2. ECE 656 Lecture 16: Solving the BTE: Magnetic Fields

    09 Nov 2009 | Online Presentations | Contributor(s): Mark Lundstrom

    Outline: General solution Current equation Coupled current equations Example Summary

    https://nanohub.org/resources/7508

  3. ECE 656 Lecture 22: Charged Impurity Scattering

    06 Nov 2009 | Online Presentations | Contributor(s): Mark Lundstrom

    Online: Review Screening Brooks-Herring approach Conwell-Weisskopf approach Discussion Summary / Questions

    https://nanohub.org/resources/7764

  4. ECE 656 Lecture 18: Strong Magnetic Fields

    05 Nov 2009 | Online Presentations | Contributor(s): Mark Lundstrom

    Outline Magnetoconductivity tensor Resistivity tensor Strong B-fields: Landau levels Shubnikov-DeHaas Oscillations and QHE Summary

    https://nanohub.org/resources/7693

  5. ECE 656 Lecture 19: Characteristic Times

    05 Nov 2009 | Online Presentations | Contributor(s): Mark Lundstrom

    Outline: Characteristic times Relaxation Time Approximation and τr

    https://nanohub.org/resources/7741

  6. ECE 656 Lecture 20: Transmission and Backscattering

    05 Nov 2009 | Online Presentations | Contributor(s): Mark Lundstrom

    Outline: Transmission and mfp MFP and carrrier scattering Extracting mean-free-paths from experiments

    https://nanohub.org/resources/7748

  7. ECE 656 Lecture 21: Scattering and Fermi's Golden Rule

    05 Nov 2009 | Online Presentations | Contributor(s): Mark Lundstrom

    Outline: Fermi’s Golden Rule Example: static potential Example: oscillating potential Discussion Summary

    https://nanohub.org/resources/7755

  8. ECE 656 Lecture 14: Solving the BTE: 1D/RTA

    07 Oct 2009 | Online Presentations | Contributor(s): Mark Lundstrom

    Outline: The RTA Solving the BTE: drift Solving the BTE: diffusion Energy-dependent scattering time Relation to Landauer Discussion Summary

    https://nanohub.org/resources/7506

  9. ECE 656 Lecture 11: Discussion

    07 Oct 2009 | Online Presentations | Contributor(s): Mark Lundstrom

    Outline: P-type conductors and thermoelectrics ZT figure of merit Maximizing the “power factor” TE parameters for non-degenerate semiconductor

    https://nanohub.org/resources/7395

  10. ECE 656 Lecture 15: Solving the BTE - General Solution for B = 0

    06 Oct 2009 | Online Presentations | Contributor(s): Mark Lundstrom

    General solution 2) Current equation 3) Coupled current equations 4) The RTA 5) Summary

    https://nanohub.org/resources/7507

  11. ECE 656 Lecture 17: BTE and Landauer

    02 Oct 2009 | Online Presentations | Contributor(s): Mark Lundstrom

    Outline: BTE review Transport Distribution Connection to Landauer Modes Mean-free-path Summary This lecture is based on a recent paper, "On Landauer vs. Boltzmann and Full Band vs....

    https://nanohub.org/resources/7509

  12. ECE 656 Lecture 10: The Drift-Diffusion Equation

    30 Sep 2009 | Online Presentations | Contributor(s): Mark Lundstrom

    Outline: Transport in the bulk The DD equation Indicial notation DD equation with B-field

    https://nanohub.org/resources/7394

  13. ECE 656 Lecture 9: Coupled Current Equations

    28 Sep 2009 | Online Presentations | Contributor(s): Mark Lundstrom

    Outline: Onsager relations Measurement considerations Thermoelectric devices

    https://nanohub.org/resources/7371

  14. ECE 656 Lecture 8: Thermoelectric Effects

    27 Sep 2009 | Online Presentations | Contributor(s): Mark Lundstrom

    Outline: Introduction One energy level formulation Distribution of energy levels Discussion Summary The author would like to thank Ms. Raseong Kim and Mr. Changwook Jeong for their many...

    https://nanohub.org/resources/7370

  15. ECE 656 Lecture 7: 2 and 3D Resistors

    27 Sep 2009 | Online Presentations | Contributor(s): Mark Lundstrom

    Outline: Another view of the same problem 2D resistors Discussion 3D resistors Summary

    https://nanohub.org/resources/7369

  16. ECE 656 Lecture 13: Solving the BTE: equilibrium and ballistic

    22 Sep 2009 | Online Presentations | Contributor(s): Mark Lundstrom

    Outline: Quick review Equilibrium BTE Ballistic BTE Discussion Summary

    https://nanohub.org/resources/7426

  17. ECE 656 Lecture 12: Boltzmann Transport Equation

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

    Outline: Introduction Semi-classical electron dynamics Boltzmann Transport Equation (BTE) Scattering Discussion Summary

    https://nanohub.org/resources/7396

  18. ECE 656 Lecture 6: Discussion

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

    Outline Quantum confinement and effective mass Bulk 1D transport and mfp Periodic vs. Box boundary conditions Thermal velocities "Ballistic mobility"

    https://nanohub.org/resources/7368

  19. ECE 656 Lecture 5: 1D Resistors

    14 Sep 2009 | Online Presentations | Contributor(s): Mark Lundstrom

    Outline: Review 1D ballistic resistors 1D diffusive resistors Discussion Summary

    https://nanohub.org/resources/7361

  20. ECE 656 Lecture 4: Density of States - Density of Modes

    14 Sep 2009 | Online Presentations | Contributor(s): Mark Lundstrom

    Outline: Density of states Example: graphene Density of modes Example: graphene Summary

    https://nanohub.org/resources/7349