Coexistence of antiferromagnetism and topological superconductivity on the honeycomb lattice Hubbard model
Yang Qi, Liang Fu, Kai Sun, Zhengcheng Gu
DOI 10.1103/PhysRevB.102.245140 · Physical Review B
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Abstract
Motivated by the recent numerical simulations for doped t−J model on the honeycomb lattice, we study superconductivity of singlet and triplet pairing on the honeycomb lattice Hubbard model. We show that a superconducting state with coexisting spin-singlet and spin-triplet pairings is induced by the antiferromagnetic order near half filling. The superconducting state we obtain has a topological phase transition that separates a topologically trivial state and a nontrivial state with Chern number two. Possible experimental realization of such a topological superconductivity is also discussed.
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