Parafermions in fractional Chern insulator-superconductor heterostructures: the role of spin polarization
This research investigates Z3 parafermions in a trench between polarized $\nu=2/3$ edges, finding that domain walls carry three protected states per pair regardless of neutral channel changes or fermion parity fixing. This topological protection is robust and requires specific even-frequency, equal-spin intravalley superconducting pairing.