Hi,
> Dear KWANT developers, > > I want to generate a 3D annulus cylinder with hopping in all the three > directions(periodic in x-direction) like the following figure. Please > suggest me the way to generate such type of geometry. If possible then > provide an example code for that for better understanding. > > image.png You can use a 'shape' function as shown in Kwant tutorial 2.3: https://kwant-project.org/doc/1/tutorial/spin_potential_shape#nontrivial-shapes. The code will be almost exactly the same as the ring example in the tutorial, except that you will have 3 coordinates instead of 2. Happy Kwanting, Joe
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