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tutorial/Fourier_transform_and_calculate_band_structures.py.py

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+import guan
+import numpy as np
+import functools
+
+# Fourier transform / calculate band structures / plot figures
+x_array = np.linspace(-np.pi, np.pi, 100)
+hamiltonian_function = functools.partial(guan.one_dimensional_fourier_transform, unit_cell=0, hopping=1)
+eigenvalue_array = guan.calculate_eigenvalue_with_one_parameter(x_array, hamiltonian_function)
+guan.plot(x_array, eigenvalue_array, xlabel='k', ylabel='E', type='-k')