Ideal Fermi gas bulk modulus
= Ideal Fermi gas bulk modulus
{title2=$B=\frac23nE_F$}
For a nonrelativistic three-dimensional ideal <electron> gas at zero <temperature>, the <pressure> is $p=2nE_F/5$ and the electronic <bulk modulus> is $B=2nE_F/3$. This is the electronic model contribution, not automatically the total <bulk modulus> of a real <crystal>.