<div dir="ltr"><div>Dear All,</div><div><br></div><div>I extracted the wannier Hamiltonian for a 2D system after the wannierization is done. Now, I want to expand this wannier Hamiltonian to that for the supercell (e.g. 100 by 100) of the original 2D system.</div><div><br></div><div>Can I just copy the wannier Hamiltonian of the original 2D system and paste it onto the diagonal part in the supercell Hamiltonian matrix 10000 times?</div><div><br></div><div>If so, would anyone please tell me how to deal with the off-diagonal part in the supercell Hamiltonian matrix?</div><div><br></div><div>Would anyone please tell me how to account the hopping between different atoms in different neighbour unit cells?</div><div><br></div><div>Would anyone please recommend some solutions or reference papers, discussing the expansion of the wannier Hamiltonian?<br></div><div><br></div><div>Thank you all very much in advance.</div><div><br></div><div>Kind regards,</div><div><br></div><div>Kenan Song<br></div></div>
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