Question: Phonon dispersion relation for ID monatomic chain was derived in our lecture note in the module for Gas Kinetics and Phonons'. Now, generalize the

Phonon dispersion relation for ID monatomic chain was derived in our lecture note in the module for

Phonon dispersion relation for ID monatomic chain was derived in our lecture note in the module for "Gas Kinetics and Phonons'. Now, generalize the treatment of a monatomic linear chain to the transvers vibrations of atoms on a 2D square lattice of atoms and show that 1/2 - (2K) 7 [2 - cos qa - m @= sqya] /2 COS

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