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arXiv · 1709.08232

Coexistence of antiferromagnetism and topological superconductivity on the honeycomb lattice Hubbard model

Yang Qi·Liang Fu·Kai Sun·Zhengcheng Gu
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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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Yang Qi, Liang Fu, Kai Sun, Zhengcheng Gu. 2020-12-24. Coexistence of antiferromagnetism and topological superconductivity on the honeycomb lattice Hubbard model. https://doi.org/10.1103/physrevb.102.245140

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