Find the optical and acoustical branches of the dispersion relation for a diatomic linear lattice,
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Q: Find the optical and acoustical branches of the dispersion relation for a diatomic linear lattice,
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Q: The derivative of the function at t = 1 is closest to: See Image:
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Find the optical and acoustical branches of the dispersion relation for a diatomic linear lattice,
solids, physics
![Question 1:
Find the optical and acoustical branches of the dispersion
relation for a diatomic linear lattice,](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fada950b6-95a8-409e-876f-047f0c62364f%2Fac534642-6ec2-4380-a89e-ea0345b6eaa5%2F4cp40mq_processed.jpeg&w=3840&q=75)
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We study the vibrations in 1D a monoatomic and diatomic lattices and obtain the dispersion relation.
The dispersion relation of vibrations in 1D diatomic lattice is given by
Here are the masses of 2 atoms.
In this , represents the optical branch.
represents the acoustical branch.
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