Dear kwanters,
I am using kwant for handle a k.p Hamiltonian, for the conductance
calculations. I start from a k.p model, and transform it to a tight-binding
model using kwant.continuum tools [procedures listed here
https://kwant-project.org/doc/1/tutorial/discretize]. Now I want to study the
conductance of the system under magnetic field. I try to do Peierls
substitution for hoppings between site i and site j (i-j being parallel to the
lead). However, I find that using the kwant.continuum scheme, there are no
information regarding the lattice information such as "lat =
kwant.lattice.honeycomb() ". This prevents the application of Peierls
substitution by the following way:
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def hopx(site1, site2, B):
y = site1.pos[1]
return - np.exp(-1j * B * y)
syst[kwant.builder.HoppingKind((1, 0), lat.a, lat.b)] = hopx
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My question is how to add magnetic field during the calculations for the
systems generated from a continuum model by kwant.continuum?
Thank you very much!
