pythtb.WFArray.u_nk

property WFArray.u_nk

The cell-periodic wavefunctions.

These are the \(|u_{n\mathbf{k}}\rangle\) states without the plane-wave phase factors.

Returns:

np.ndarray

The cell-periodic wavefunctions. Shape is (*shape_mesh, nstates, norb[, nspin]).

Raises:

ValueError

If the wavefunctions are not initialized or if k-axes are not present in the mesh.