kwant.solvers.default.ldos#
- kwant.solvers.default.ldos(sys, energy=0, args=(), check_hermiticity=True, *, params=None)[source]#
Calculate the local density of states of a system at a given energy.
An alias exists for this common name:
kwant.ldos.- Parameters:
sys (
kwant.system.FiniteSystem) – Low level system, containing the leads and the Hamiltonian of the scattering region.energy (number) – Excitation energy at which to solve the scattering problem.
args (tuple of arguments, or empty tuple) – Positional arguments to pass to the function(s) which evaluate the hamiltonian matrix elements. Deprecated in favor of ‘params’ (and mutually exclusive with it).
check_hermiticity (
bool) – Check if the Hamiltonian matrices are Hermitian.params (dict, optional) – Dictionary of parameter names and their values. Mutually exclusive with ‘args’.
- Returns:
ldos – Local density of states at each orbital of the system.
- Return type:
a NumPy array