Re: [Kwant] Fixing min and max values of colormap using kwant.plot

Hello Joseph, Thanks a lot for the information. I will try this method and see what I can do with it. Best regards, Shivang Agarwal On Mon 19 Nov, 2018, 7:35 PM Joseph Weston Hi, > > > Thank you for the quick response. When I try *kwant.plotter.map(sys, > value, vmin=0, vmax=2

Re: [Kwant] Fixing min and max values of colormap using kwant.plot

mit for the colormap; valued returned by > `value` which are larger than this will saturate > > > > I hope this helps, > > Adel > > > On Mon, Nov 19, 2018 at 12:42 PM Shivang Agarwal < > shivang.agar...@iitgn.ac.in> wrote: > >> Dear All, >&g

[Kwant] Fixing min and max values of colormap using kwant.plot

to a fixed number, say 5, for all plots. That way the value 5 will be yellow and 2.4 could be orange while 0.9 could be blue - leading to easier comparison between plots of seen side by side. Any help would be greatly appreciated. Thanks and best regards, Shivang Agarwal -- *Shivang Agarwal* S

Re: [Kwant] Merging two systems

Dear Anton, Thanks for the quick response. That worked perfectly, just what I needed. Thank you, Best regards, Shivang Agarwal On Wed, Oct 17, 2018 at 2:40 PM Anton Akhmerov wrote: > Dear Shivang Aragwal, > > If the two systems do not contain same sites, then combining them is as &g

[Kwant] Merging two systems

same graph, and then calculate transmission of combined sys1+sys2? Any help would be much appreciated. Best Regards, Shivang Agarwal -- *Shivang Agarwal* Senior Undergraduate Coordinator - Academic Discussion Hours Discipline of Electrical Engineering IIT Gandhinagar Contact: +91-9869321451

[Kwant] Disconnected Quantum Dot Shape for Black Phosphorous

lw=0.1)* Any help would be greatly appreciated. Regards, Shivang Agarwal -- *Shivang Agarwal* Senior Undergraduate Coordinator - Academic Discussion Hours Discipline of Electrical Engineering IIT Gandhinagar Contact: +91-9869321451

Re: [Kwant] Attaching 3D Leads to a 3D System

s a bit cryptic, and I've opened an issue [1] against this > usability bug, > > > > Happy Kwanting, > > Joe > > P.S. I also note that *you never actually attach the lead that you > created*; is this really what you want? > > [1]: https://gitlab.kwant-project.org/kwant/kwant/issues/222 > > -- *Shivang Agarwal* Senior Undergraduate Discipline of Electrical Engineering IIT Gandhinagar Contact: +91-9869321451

[Kwant] Attaching 3D Leads to a 3D System

e lattice lead (or to be precise, just 1 layer of the 2D square lattice lead as shown in https://kwant-project.org/doc/1.3/tutorial/faq) to one side of my 3D system. I would be really glad if someone could help me out with this problem. Best Regards, Shivang -- *Shivang Agarwal* Senior Undergrad

[Kwant] Finding hamiltonian of system (error in user defined function 'onsite')

r. I would be glad if someone can help me out with the same. Any help will be much appreciated! Sincerely, Shivang Agarwal -- *Shivang Agarwal* Junior Undergraduate Discipline of Electrical Engineering IIT Gandhinagar Contact: +91-9869321451

Re: [Kwant] Band Structure in an Electric Field (Lead vs System)

in your tight-binding model. You can look for > "Peierls substitution" if you want to see how it is done. > > For your information, you should note that the purpose of this mailing > list is to help with issues related to Kwant, but not really related to > physics itself

Re: [Kwant] Band Structure in an Electric Field (Lead vs System)

interpret what you mean when you > say you want to plot "the band structure for your system". If you > provide more context for what your end goal is, we may be able to help > more. > > Happy Kwanting, > > Joe > > > -- *Shivang Agarwal* Junior Undergraduate Discipline of Electrical Engineering IIT Gandhinagar Contact: +91-9869321451

Re: [Kwant] Band Structure in an Electric Field (Lead vs System)

e of my system (and not its leads) > from > > the code below? Where am I going wrong? How do I avoid the error? > > Band structures only make sense for spatially periodic systems where it > is possible to define a momentum. What is it that you would like to > plot for your system

[Kwant] Band Structure in an Electric Field (Lead vs System)

preciated! Shivang Agarwal

Re: [Kwant] AttributeError: 'FiniteSystem' object has no attribute 'site' [site = sys.site(i) not working]

> > I believe the code you consider is from a previous version of Kwant. > Now it'd be syst.sites[i]. Can you please let us know where you found > that code? Was it in the Kwant documentation? > > Best, > Anton > On Tue, Jun 12, 2018 at 8:58 PM Shivang Agarwal > wro

[Kwant] AttributeError: 'FiniteSystem' object has no attribute 'site' [site = sys.site(i) not working]

he sys.site(i) command? I would like the wave functions to look smooth and continuous. Any help would be appreciated. Best Regards, Shivang -- *Shivang Agarwal* Junior Undergraduate Discipline of Electrical Engineering IIT Gandhinagar Contact: +91-9869321451

Re: [Kwant] Coupling Matrix between Lead and Conductor

gt; You can get the wavenumbers by calling 'kwant.modes' on a lead and > querying the propagating modes. This contains the wavefunctions for the > modes of the provided lead, as well as the wavenumbers and velocities. > > Happy Kwanting, > > Joe > > -- *Shivang Agarwal* Junior Undergraduate Discipline of Electrical Engineering IIT Gandhinagar Contact: +91-9869321451

Re: [Kwant] Coupling Matrix between Lead and Conductor

request. > > > I hope this helps. > Adel > > > > On Fri, Jun 8, 2018 at 11:09 PM, Shivang Agarwal < > shivang.agar...@iitgn.ac.in> wrote: > >> Hi, >> >> I had one more query. Would it be possible to calculate and plot the >> magnitude

Re: [Kwant] Coupling Matrix between Lead and Conductor

Hi, I had one more query. Would it be possible to calculate and plot the magnitude and phase of the complex wave function of each transmission mode separately? Regards, Shivang On Thu, Jun 7, 2018 at 8:29 PM Shivang Agarwal wrote: > Hi Abbout, > > Thanks for swift response. >

Re: [Kwant] Coupling Matrix between Lead and Conductor

mber (module > and *phase*). So, your claim that you are unable to get the phase is > confusing! > > I hope this helps. > Adel > > [1] > https://mailman-mail5.webfaction.com/pipermail/kwant-discuss/2015-May/000355.html > > > > Abbout Adel > > On Wed, Jun 6, 20

Re: [Kwant] Coupling Matrix between Lead and Conductor

Thanks Xavier. I now have a clearer picture. Regards, Shivang On Thu, Jun 7, 2018 at 11:33 AM Xavier Waintal wrote: > Hi Shivang, > > > Le 6 juin 2018 à 22:53, Shivang Agarwal a > écrit : > > Hello authors, > > I am trying to perform an eigenchannel analysis of a

Re: [Kwant] Coupling Matrix between Lead and Conductor

Just a correction: I am interested in finding the transmission matrix 't' from the following: t†t = *ГL(E)½ GC†(E) ГR(E) GC(E) ГL(E)½ * Best Regards, Shivang On Thu, Jun 7, 2018 at 2:23 AM, Shivang Agarwal wrote: > Hello authors, > > I am trying to perform an eigench

[Kwant] Coupling Matrix between Lead and Conductor

re's any other way to find it that would also be extremely helpful.* *Any help would be greatly appreciated.* *Thanks and Regards,* *Shivang Agarwal* -- *Shivang Agarwal* Junior Undergraduate Discipline of Electrical Engineering IIT Gandhinagar Contact: +91-9869321451

[Kwant] V-I curves in Kwant

Hi All, I am trying to plot V-I curves for graphene quantum dots but don't know how to proceed. I have plotted conductance as a function of energy. Can anyone help me understand how do I obtain V-I curves? Any help will be much appreciated! Thank you, Sincerely, Shivang -- *Shivang Ag