1 / 10

Lattice Vibrations – Phonons in Solids

Lattice Vibrations – Phonons in Solids. Alex Mathew University of Rochester. What is a phonon?. Phonon – Quantum of lattice vibration Photon – Quantum of electromagnetic radiation Important Concept in Solid State Physics. Origin of phonon. Lattice – Harmonic Oscillators

bobl
Download Presentation

Lattice Vibrations – Phonons in Solids

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Lattice Vibrations – Phonons in Solids Alex Mathew University of Rochester

  2. What is a phonon? • Phonon – Quantum of lattice vibration • Photon – Quantum of electromagnetic radiation • Important Concept in Solid State Physics

  3. Origin of phonon • Lattice – Harmonic Oscillators • Two solution to equations of motion • Optical mode Associated with radiation interaction • Acoustic mode

  4. Maxwell-Bolzmann Fermi-Dirac Bose-Einstein Phonons BOSONS integer spin

  5. Phonon and Solid State • Specific Heat T3 dependence at low temperature 2. Thermal and Electrical Conductivity Phonons- Heat carriers in non-metals

  6. 3. Phonon and Superconductivity

  7. Transmission of Sound Long-wavelength phonons • Reflectivity of Ionic Crystals • Vibrational Spectroscopy Raman scattering – Optical Phonons Brillouin scattering – Acoustic Phonons

  8. Thank you

More Related