Kwant-discuss September 2013

kwant-discuss@python.org

9 participants
4 discussions

Tutorial files - 500 – Internal Server Error
by Benjamín Santos 16 Oct '13

16 Oct '13

Greetings, I am trying to follow the kwant tutorial but there is a problem when downloading tutorial files, e.g.: http://kwant-project.org/doc/1.0/_downloads/quantum_wire_revisited.py I am working on my own implementations of quantum transport and I want to compare my results with those of kwant. Thanks, -- ________ Benjamín Santos --- {ben}

4 5

spin-orbit and ldos
by Jerzy Wrobel 27 Sep '13

27 Sep '13

Hi All, I have modified quantum_wire_revisited.py by adding new function def plot_ldos(sys, energy): # Compute local dos local_dos = kwant.ldos(sys, energy) kwant.plotter.map(sys, local_dos, num_lead_cells=5) and adding new command plot_ldos(sys, energy=0.5) to the already existing function main(). It works well. However, when I have modified the spin-orbit.py file in the same way, program halts. Some cryptic messages, which ended with ValueError: different number of values and points, are generated. How to resolve this? Thanks in advance, Jerzy

3 6

kwant.plotter.map() fails when passed an instance of axes
by Daniyar Nurgaliev 20 Sep '13

20 Sep '13

Version: kwant.__version__ == '1.0.0' Problem: when kwant.plotter.map() is given the axes to plot on such as kwant.plotter.plot(system, stuff_to_plot, ax = gca()) kwant/plotter.py first sets fig=None in line 1523 and the tries to create colorbar for a None object in line 1536 Possible solution: Either disable colorbar in this case line 1535: if colorbar and fig is not None: Or figure out how to create another axes with colorbar.

2 1

test
by christoph＠grothesque.org 10 Sep '13

10 Sep '13

test

3 2

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Kwant-discuss September 2013