Non-hermitian matrix about pybinding HOT 2 CLOSED

Hi Yangxing
currently, pybinding has no support for constructing non-hermitian matrices/hamiltonians.
The eigenvalues will be complex, and this will break a lot of things in the background.
Also, when you add a hopping, lets say from site numbered (10) to a site numbered (12), the other hopping (12) -> (10) is added automatically. Setting (12) -> (10) by hand afterwards will result in an error.
However, when you have a Hamiltonian for a large system (lets say, some buckled graphene), you can add some non-hermitian element by hand by obtaining the hamiltonian with model.hamiltonian. This will be at the k-point you set with model.set_wave_vector([kx,ky,kz]).
Be carefull, the hamitlonian is the transpose of the normal convention; in the basis <from|H|to> instead of the <to|H|from> basis. As this only would change some factors in the normal calculations, this is normally not a problem but it worth the attention if you want to investigate non-hermitian systems.
Feel free to ask more questions if you need more help.
Best
Bert

from pybinding.

Thank you very much!

from pybinding.