sknano.core.atoms.POAV.Vpi

POAV.Vpi

$\mathbf{v}_{\pi}$ unit Vector

Returns the $\pi$-orbital axis vector ($\mathbf{v}_{\pi}$) unit vector.

$$\mathbf{V}_{\pi} = \frac{\mathbf{v}_{\pi}}{|\mathbf{v}_{\pi}|}$$