4 papers
Magnetism and superconductivity in bilayer nickelate
Hui Yang, Ya-Hui Zhang
The discovery of high-temperature superconductivity in bilayer nickelate LaNiO necessitates a minimal theoretical model that unifies the superconducting phase wit…
Doping a spin-one Mott insulator: possible application to bilayer nickelate
Hanbit Oh, Hui Yang, Ya-Hui Zhang
In this article, we review some recent theoretical developments on potential high-temperature superconductors and unconventional metallic states that can arise from doping a spin-o…
Topological incommensurate Fulde-Ferrell-Larkin-Ovchinnikov superconductor and Bogoliubov Fermi surface in rhombohedral tetra-layer graphene
Hui Yang, Ya-Hui Zhang
We performed a random phase approximation (RPA) calculation for a spin-valley polarized model of the rhombohedral tetra-layer graphene to study the possibility of chiral supercondu…
High-temperature superconductivity from kinetic energy
Hanbit Oh, Hui Yang, Ya-Hui Zhang
Superconductivity is usually assumed to arise from attractive interaction. In this work we show that strong pairing is possible soley from kinetic energy even without a net attract…