Page 1 of 1
6. Optical phonon and acoustic phonon: (a) Draw the dispersion curves for a diatomic linear chain in the first brillouin
Posted: Tue Apr 26, 2022 1:57 pm
by answerhappygod
- 6 Optical Phonon And Acoustic Phonon A Draw The Dispersion Curves For A Diatomic Linear Chain In The First Brillouin 1 (21.12 KiB) Viewed 37 times
6. Optical phonon and acoustic phonon: (a) Draw the dispersion curves for a diatomic linear chain in the first brillouin zone. (b) How do the atoms vibrate at the zone boundary in each branch? (c) What if the two different kinds of atoms have an identical mass? (d) If the primitive unit cell has 5 different atoms, how many longitudinal acoustic branches, transverse acoustic branches, longitudinal optical and transverse optical branches?