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cond-mat.str-el2009★ 1 cited
Quantum spin liquid with fermionized pi-vortices
Su-Peng Kou, Lan-Feng Liu, Jing He +1
In this paper, we study the non-magnetic insulator state near Mott transition of 2D pi-flux Hubbard model on square lattice and find that such non-magnetic insulator state is quant…
cond-mat.str-el2009
Quantum Phase Transitions of Topological Insulators
Lan-Feng Liu, Su-Peng Kou
In this paper, starting from a lattice model of topological insulators, we study the quantum phase transitions among different quantum states, including quantum spin Hall state, qu…