fermi_dirac

sisl.physics.fermi_dirac(E, kT=0.1, mu=0.0)

Fermi-Dirac distribution function

\[n_F(E,k_BT,\mu) = \frac{1}{\exp\Big[\frac{E - \mu}{k_BT}\Big] + 1}\]

Parameters:

E: array_like

energy evaluation points

kT: float, optional

temperature broadening

mu: float, optional

chemical potential

Returns:

numpy.ndarray

the Fermi-Dirac distribution, same length as E