The phonon dispersion for the following one-dimensional diatomic lattice with masses M, and M, (as shown in the figure) K lelll lelll llll M, M, is given by 1 1土|1- M2 4M M, (M, + M,) sin2 ga 2. 1 o* (q) = K| M, where a is the lattice parameter and K is the spring constan.. The velocity of sound is
The phonon dispersion for the following one-dimensional diatomic lattice with masses M, and M, (as shown in the figure) K lelll lelll llll M, M, is given by 1 1土|1- M2 4M M, (M, + M,) sin2 ga 2. 1 o* (q) = K| M, where a is the lattice parameter and K is the spring constan.. The velocity of sound is
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Transcribed Image Text:The phonon dispersion for the following one-dimensional diatomic lattice with masses
M, and M, (as shown in the figure)
K
lell
elll
M
elll
elll
M,
M,
is given by
4M M2
(м, + м,?
1
o* (q) = K
1
1土|1-
М,
sin2 ga
where a is the lattice parameter and K is the spring constan.. The velocity of sound is
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