quant_met.mean_field.hamiltonians.Graphene.

bdg_hamiltonian_derivative

Graphene.bdg_hamiltonian_derivative(k, direction)

Calculate the derivative of the BdG Hamiltonian.

This method computes the spatial derivative of the Bogoliubov-de Gennes Hamiltonian with respect to the specified direction.

Parameters:

knumpy.ndarray

List of k points in reciprocal space.

directionstr

Direction for the derivative, either ‘x’ or ‘y’.

Returns:

numpy.ndarray

The derivative of the BdG Hamiltonian matrix in the specified direction.