PHZ3400 Phonons: Difference between revisions
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===Low T specific heat=== | ===Low T specific heat=== | ||
===Debye model=== | ===Debye model=== | ||
- Analogous to Planck's Blackbody Radiation Law, except this deals with phonons instead of photons. | |||
==Planck distribution and the black-body radiation law== | ==Planck distribution and the black-body radiation law== | ||
==Experimental probes of phonons== | ==Experimental probes of phonons== | ||
Revision as of 09:16, 20 March 2009
Law of Dulong and Pettit: failure of classical physics
-Works fine at high temperature, but at low temperature the quantum mechanical nature of the material dominates. The Debye model gives the correct interpretation at low temperature.
Quantization of sound waves: phonons
Bose-Einstein distribution
Classical limit
Thermodynamics of phonons
Low T specific heat
Debye model
- Analogous to Planck's Blackbody Radiation Law, except this deals with phonons instead of photons.