Hi, my friends. Recently, I studied, on Kwant, the transport properties of a graphene nanoribbon without dificulty. Now, I wanted to obtain the same thing, but applying a strain, as suggested by this reference: http://arxiv.org/abs/1409.6666
In the presence strain, the hopping is modified by the deformation of the lattice, which must now be t_ij=t_0*exp(d/a - 1), where d is the strain-modified distance between lattice sites and t_0 is hopping in absence of strain. Note that the network is no longer crystalline. That way, I can not define the vectors of a single cell and repeat it to obtain my lattice. In this case, I guess I'll have to build every atom of the network and add the hopping according with the relation above to the nearest neighbors. Obviously, this not is good idea. Someone help me with a simpler solution? Thank you so much. Jonas Nascimento
