PHZ3400 Phonons: Difference between revisions
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===Harmonic approximation: inter-atomic forces as springs=== | ===Harmonic approximation: inter-atomic forces as springs=== | ||
=== | ===One dimensional mono-atomic chain=== | ||
===Sound waves - acoustic modes=== | ===Sound waves - acoustic modes=== | ||
=== | ===One dimensional diatomic chain: optical modes=== | ||
==Law of Dulong and Petit: failure of classical physics== | ==Law of Dulong and Petit: failure of classical physics== | ||