gftool.lattice.box.dos

gftool.lattice.box.dos(eps, half_bandwidth)[source]

Box-shaped DOS.

Parameters:

epsfloat array_like or float: DOS is evaluated at points eps.
half_bandwidthfloat: Half-bandwidth of the DOS, DOS(| eps | > half_bandwidth) = 0.

Returns:

float np.ndarray or float: The value of the DOS.

Examples

>>> eps = np.linspace(-1.1, 1.1, num=500)
>>> dos = gt.lattice.box.dos(eps, half_bandwidth=1)

>>> import matplotlib.pyplot as plt
>>> _ = plt.plot(eps, dos)
>>> _ = plt.xlabel(r"$\epsilon/D$")
>>> _ = plt.ylabel(r"DOS * $D$")
>>> _ = plt.axvline(0, color='black', linewidth=0.8)
>>> _ = plt.ylim(bottom=0)
>>> _ = plt.xlim(left=eps.min(), right=eps.max())
>>> plt.show()

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