Drop of quasiparticle weight by increasing interaction

The quasiparticle weight of the electronic system drops as the local interaction is increased. When studying the single band case, only the half-filled scenario undergoes a transition into the Mott insulator. All other doping configurations retain the strongly correlated metal.

Traceback (most recent call last):
  File "/home/docs/checkouts/readthedocs.org/user_builds/slaveparticles/envs/latest/local/lib/python2.7/site-packages/sphinx_gallery/gen_rst.py", line 467, in execute_script
    exec(code_block, example_globals)
  File "<string>", line 15, in <module>
  File "<string>", line 13, in plot_dop
  File "build/bdist.linux-x86_64/egg/slaveparticles/utils/plotter.py", line 60, in plot_curves_z
    plt.figure()
  File "/usr/lib/pymodules/python2.7/matplotlib/pyplot.py", line 423, in figure
    **kwargs)
  File "/usr/lib/pymodules/python2.7/matplotlib/backends/backend_tkagg.py", line 79, in new_figure_manager
    return new_figure_manager_given_figure(num, figure)
  File "/usr/lib/pymodules/python2.7/matplotlib/backends/backend_tkagg.py", line 87, in new_figure_manager_given_figure
    window = Tk.Tk()
  File "/usr/lib/python2.7/lib-tk/Tkinter.py", line 1767, in __init__
    self.tk = _tkinter.create(screenName, baseName, className, interactive, wantobjects, useTk, sync, use)
TclError: no display name and no $DISPLAY environment variable

from __future__ import division, absolute_import, print_function
import slaveparticles.utils.plotter as ssplt
import numpy as np
import matplotlib.pyplot as plt

#band dop
def plot_dop(bands, int_max, dop, hund_cu, name):
    """Plot of Quasiparticle weight for N degenerate bands
    under selected doping shows transition only at half-fill
    the rest are metallic states"""
    data = ssplt.calc_z(bands, dop, np.arange(0, int_max, 0.1), hund_cu, name)
    ssplt.plot_curves_z(data, name)

plot_dop(1, 4.6, [0.5, 0.499, 0.495, 0.49, 0.45, 0.4, 0.2, 0.1], 0., 'Z_dop_1orb')

Total running time of the script: (0 minutes 0.000 seconds)

Download Python source code: plot_z_dop_1orb.py

Download IPython notebook: plot_z_dop_1orb.ipynb