Mailman 3 September 2013 - Kwant-discuss

Tutorial files - 500 – Internal Server Error
by Benjamín Santos Oct. 16, 2013

Oct. 16, 2013

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}

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spin-orbit and ldos
by Jerzy Wrobel Sept. 27, 2013

Sept. 27, 2013

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

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kwant.plotter.map() fails when passed an instance of axes
by Daniyar Nurgaliev Sept. 20, 2013

Sept. 20, 2013

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.

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test
by christoph＠grothesque.org Sept. 10, 2013

Sept. 10, 2013

test

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