105 citations · 321 across the 12 of their papers we have counts for
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Quasiparticle Properties under Interactions in Weyl and Nodal Line Semimetals
Jing Kang, Jianfei Zou, Kai Li +2
The quasiparticle spectra of interacting Weyl and nodal-line semimetals on a cubic lattice are studied using the cluster perturbation theory. By tracking the spectral functions und…
-pairing in correlated fermion models with spin-orbit coupling
Kai Li
We generalize the -pairing theory in Hubbard models to the ones with spin-orbit coupling (SOC) and obtain the conditions under which the -pairing operator is an eigenoperator…
Phase diagram and topological phases in the triangular lattice Kitaev-Hubbard model
Kai Li, Shun-Li Yu, Zhao-Long Gu +1
We study the half-filled Hubbard model on the triangular lattice with spin-dependent Kitaev-like hopping. Using the variational cluster approach, we identify five phases: a metalli…
Quantum cluster approach to the topological invariants in correlated Chern insulators
Zhao-Long Gu, Kai Li, Jian-Xin Li
We detect the topological properties of Chern insulators with strong Coulomb interactions by use of cluster perturbation theory and variational cluster approach. The common scheme…
Global phase diagram, possible chiral spin liquid and topological superconductivity in the triangular Kitaev-Heisenberg model
Kai Li, Shun-Li Yu, Jian-Xin Li
The possible ground states of the undoped and doped Kitaev-Heisenberg model on a triangular lattice are studied. For the undoped system, a combination of the numerical exact diagon…