Theory of ferrimagnetism in the Hubbard model on bipartite lattices with spectral symmetry.
The Hubbard model is one of the most important models in condensed matter physics. In this paper, we developed a theory of ferrimagnetism in the Hubbard model on bipartite lattices with spectral symmetry. By taking three models as examples, we studied the ferrimagnetic orders that emerge from three typical fermionic systems--metal, semi-metal and (Chern) insulator. In particular, we found that there may exist various ferrimagnetic orders and explored the universal features.
Department of Physics, Beijing Normal University, Beijing 100875, People's Republic of China.
Yang
Y
Xue
Jing
J
He
Xing-Hai
XH
Zhang
Su-Peng
SP
Kou