Question #46474
Is the following statement true for vibrations of a chain of two different types of atoms:
“At the centre of the Brillouin zone, the frequency of the optical branch is less than the
frequency of the acoustic branch”? Explain.
“At the centre of the Brillouin zone, the frequency of the optical branch is less than the
frequency of the acoustic branch”? Explain.
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#339914 on Dec 2023
#339914 on Dec 2023
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