quant_met.mean_field.hamiltonians.OneBand.

hamiltonian_derivative

OneBand.hamiltonian_derivative(k, direction)

Deriative of the Hamiltonian.

Parameters:

k: :class:`numpy.ndarray`

List of k points.

direction: str

Direction for derivative, either ‘x’ oder ‘y’.

Returns:

numpy.ndarray

Derivative of Hamiltonian.