Chiral f-wave Topological Superuid in Triangular Optical Lattices

TL;DR

This paper proposes a method to realize a chiral f-wave topological superfluid in cold atom triangular optical lattices, featuring Majorana edge states and vortex-bound Majorana fermions, advancing topological quantum matter research.

Contribution

It introduces a novel way to induce chiral f-wave topological superfluidity in cold atom systems using laser-generated gauge fields and Feshbach resonance, expanding the family of topological superfluids.

Findings

Presence of three gapless Majorana edge states

Degeneration of edge states into vortex-bound Majorana fermions

Experimental controllability of the topological phase

Abstract

We demonstrate that an exotically chiral f-wave topological superfluid can be induced in coldfermionic-atom triangular optical lattices through the laser-field-generated effective non-Abelian gauge field, controllable Zeeman fields and s-wave Feshbach resonance. We find that the chiral f-wave topological superfluid is characterized by three gapless Majorana edge states located on the boundary of the system. More interestingly, these Majorana edge states degenerate into one Majorana fermion bound to each vortex in the superfluid. Our proposal enlarges topological superfluid family and specifies a unique experimentally controllable system to study the Majorana fermion physics.