Commit 0c0a5c70 authored by Joseph Weston's avatar Joseph Weston
Browse files

add forgotten parameter to docstring of 'kwant.kpm.conductivity'

parent 2bb9ff6d
......@@ -778,6 +778,8 @@ def conductivity(hamiltonian, alpha='x', beta='x', positions=None, **kwargs):
hamiltonian : `~kwant.system.FiniteSystem` or matrix Hamiltonian
If a system is passed, it should contain no leads.
alpha, beta : str, or operators
If ``hamiltonian`` is a kwant system, or if the ``positions``
are provided, ``alpha`` and ``beta`` can be the directions of the
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