A wide range of materials, like d-wave superconductors, graphene, and topological
insulators, share a fundamental similarity: their low-energy fermionic excitations behave as …

A highly unconventional superconducting state with a spin-singlet $ d_ {x^ 2-y^ 2}\pm {\rm i}
d_ {xy} $-wave, or chiral d-wave symmetry has recently been suggested to emerge from …

We show that in a two-dimensional electron gas with an annular Fermi surface, long-range
Coulomb interactions can lead to unconventional superconductivity by the Kohn-Luttinger …

We discuss a pairing mechanism in interacting two-dimensional multipartite lattices that
intrinsically leads to a second order topological superconducting state with a spatially …

Hexagonal ABO 3 oxides (A, B= cation) are a class of rich materials for realizing novel
quantum phenomena. Their hexagonal symmetry, oxygen trigonal bipyramid coordination …

We introduce generic bosonic models exemplifying that chiral Meissner currents can persist
in insulating phases of matter. We first consider interacting bosons on a two-leg ladder. The …

A simple yet paradigmatic model for the interplay of strong electronic correlations and
geometric frustration is the triangular lattice Hubbard model. Recently it was proposed that …

Artificial lattices have served as a platform to study the physics of unconventional
superconductivity. We study semiconductor artificial graphene—a honeycomb superlattice …

We study superconductivity on the honeycomb lattice close to the Mott state at half filling.
Due to the sixfold lattice symmetry and disjoint Fermi surfaces at opposite momenta, we …

Motivated by the possibility of superconductivity in doped graphene sheets, we investigate
superconducting order in the extended Hubbard model on the two-dimensional graphene …