Chiral superconductivity in the triangular-lattice Fermi-Hubbard model

by Vinicius Zampronio (Utrecht University)

Tuesday 13 Dec 2022, 14:30 → 15:30 Europe/Rome

Aula Magna

The triangular-lattice Fermi-Hubbard model has been extensively investigated in the literature due to its connection to chiral spin states and unconventional superconductivity. Previous simulations of the ground state of the doped system rely on quasi-one-dimensional lattices where true long-range order is forbidden. Here, I will talk about the simulation of a 12x12 triangular lattice using state-of-the-art Auxiliary-Field Quantum Monte Carlo. Upon doping a non-magnetic chiral spin state, evidence of chiral superconductivity is observed at filling n=5/6, which is supported by long-range order in Cooper-pair correlation and a finite value of the chiral order parameter