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June Edgar Asok
Monoatomic Cubic Lattice Problem?
You have a monoatomic cubic lattice of lattice spacing a=3 angstrom and sound velocity c=10^3m/s,
Say you want to do a lattice heat-capacity experiment in the fully quantum-mechanical regime. (i.e. even the acoustic modes have frozen out). Your apparatus is capable of reaching liquid-helium temperature (4K). How small dos your sample have to be? Give the answer in atoms.
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:):):)
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