Wan-Sheng Wang

Functional renormalization group and variational Monte Carlo studies of the electronic instabilities in graphene near 1/4 doping

We study the electronic instabilities of near 1/4 electron doped graphene using the singular-mode functional renormalization group, with a self-adaptive

Triplet pairing and possible weak topological superconductivity inBiS2-based superconductors

k

Competing electronic orders on kagome lattices at van Hove filling

mesh to improve the treatment of the van Hove singularities, and variational Monte Carlo method. At 1/4 doping the system is a chiral spin-density wave state exhibiting the anomalous quantized Hall effect. When the doping deviates from 1/4, the

Topological superconducting phase in the vicinity of ferromagnetic phases

{d}_{{x}^{2}\ensuremath{-}{y}^{2}}+i{d}_{xy}

Antiferromagnetism,f-wave, and chiralp-wave superconductivity in a kagome lattice with possible application tosd2graphenes

Cooper pairing becomes the leading instability. Our results suggest that near 1/4 electron or hole doping (away from the neutral point) the graphene is either a Chern insulator or a topoligical superconductor.

Possible superconductivity in the electron-doped chromium pnictide LaOCrAs

We show that the newly discovered BiS

Transformation of the superconducting gap to an insulating pseudogap at a critical hole density in the cuprates

_2

Superconductivity in dopedSr2IrO4: A functional renormalization group study

-based superconductors may have a dominant triplet pairing component, in addition to a subdominant singlet component arising from the spin-orbital coupling. The pairing respects time-reversal symmetry. The dominant triplet gap causes gap sign changes between the spin-split Fermi pockets. Within a pocket, the gap function respects

Tripletf-wave pairing in SrPtAs

d^*_{x^2-y^2}

Electronic structure anddx2−y2-wave superconductivity in FeS

-wave symmetry, where the star indicates joint spin-lattice rotations. Below the Lifshitz filling level the gap is nodelss and the superconducting state is weak topological. Above the Lifshitz points the gap becomes nodal. The dominant triplet pairing is consistent with the experimental upper critical field exceeding the Pauli limit.