- #1
johannes919
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Aluminium has an fcc structure, which is a simple cubic lattice with four Al-atoms in the basis.
On the other hand, diamond has a diamond structure, which is a simple cubic lattice with 8 atoms in basis.
Now, diamond has optical modes in addition to acoustical, while Aluminium does not. What is the reason for this?
On the other hand, diamond has a diamond structure, which is a simple cubic lattice with 8 atoms in basis.
Now, diamond has optical modes in addition to acoustical, while Aluminium does not. What is the reason for this?