Dear sir, Could you please provide me an working example of this type? Best Regards Naveen Yadav Research Scholar Department of Physics & Astrophysics University of Delhi New Delhi-110007
On Thu, May 7, 2020, 20:37 Abbout Adel <abbout.a...@gmail.com> wrote: > Hi again, > > I f you want translational symmetry, you need to use wraparound module and > you will need to find your result only on one unit cell. > You will have also to do integration on the Brillouin zone. > > I hope this helps > Adel > > On Thu, May 7, 2020 at 5:12 PM Naveen Yadav <naveengunwa...@gmail.com> > wrote: > >> Dear sir, >> I understand what you have said. But how can I maintain translation >> symmetry ?because my system is 3D and for plotting current I access the >> sites of 3D system using *list(sys.sites) *and plot the current for 2D >> slice. Please suggest me. >> >> Best Regards >> Naveen Yadav >> Research Scholar >> Department of Physics & Astrophysics >> University of Delhi >> New Delhi-110007 >> >> On Thu, May 7, 2020, 19:06 Abbout Adel <abbout.a...@gmail.com> wrote: >> >>> Dear Naveen, >>> >>> What you get is what is expected. You do not have translational symmetry. >>> Rewrite your code by keeping only two dimensions and you will see why. >>> >>> I hope this helps, >>> Adel >>> >>> >>> On Thu, May 7, 2020 at 12:52 PM Naveen Yadav <naveengunwa...@gmail.com> >>> wrote: >>> >>>> Dear KWANT Developers, >>>> I am trying to plot the current density. The procedure is >>>> straightforward. I have attached leads to the scattering region (leads have >>>> same onsite and hopping as of the scattering region) as >>>> >>>> >>>> >>>> >>>> >>>> >>>> >>>> >>>> >>>> >>>> >>>> *sys[(lat(z,y,x) for z in range(H) for y in range(W)for x in >>>> range(L))]=onsitesys[kwant.builder.HoppingKind((1, 0, 0), lat, lat)] = >>>> hoppingzsys[kwant.builder.HoppingKind((0, 1, 0), lat, lat)] = >>>> hoppingysys[kwant.builder.HoppingKind((0, 0, 1), lat, lat)] = >>>> hoppingxlead=kwant.Builder(kwant.TranslationalSymmetry((1,0,0)))lead[(lat(z,y,x) >>>> for z in range(H) for y in range(W)for x in >>>> range(L))]=onsitelead[kwant.builder.HoppingKind((1, 0, 0), lat, lat)] = >>>> hoppingzlead[kwant.builder.HoppingKind((0, 1, 0), lat, lat)] = >>>> hoppingylead[kwant.builder.HoppingKind((0, 0, 1), lat, lat)] = >>>> hoppingxsys.attach_lead(lead, >>>> add_cells=80)sys.attach_lead(lead.reversed())* >>>> [image: image.png] >>>> As you can see from the plot there is a discontinuity in the plot at >>>> (W=20). Why it is so even if the scattering region and leads have same >>>> onsite and hopping and there is translation symmetry throughout ? >>>> >>>> -- >>>> Best Regards, >>>> Naveen Yadav >>>> Research Scholar >>>> Department of Physics & Astrophysics >>>> University Of Delhi >>>> New Delhi-110007 >>>> >>> >>> >>> -- >>> Abbout Adel >>> >> > > -- > Abbout Adel >
