Condensed Matter Physics - Lattice Vibration : Vibration of Monatomic Linear Lattice - 02

Описание к видео Condensed Matter Physics - Lattice Vibration : Vibration of Monatomic Linear Lattice - 02

This is the second part of the lecture on vibration of monatomic linear lattice. In the first part of the lecture on the same we have obtained the dispersion relation which is an equation relating the frequency of vibration with the wave vector. In this second part of the lecture you will find the discussions of this result. It’s found that in case of extremely small frequency that is when the wave length is extremely large, phase velocity of the wave is indipendent of the wave length, which implies that the dispersion effects are negligible in this limiting condition. The linear lattice acts like a low pass filter.

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