title: Topological Superconductivity and High Chern Numbers in 2D Ferromagnetic Shiba Lattices.
abstract: Inspired by the recent experimental observation of topological superconductivity in ferromagnetic chains, we consider a dilute 2D lattice of magnetic atoms deposited on top of a superconducting surface with a Rashba spin-orbit coupling. We show that the studied system supports a generalization of px+ipy superconductivity and that its topological phase diagram contains Chern numbers higher than ξ/a(≫1), where ξ is the superconducting coherence length and a is the distance between the magnetic atoms. The signatures of nontrivial topology can be observed by STM spectroscopy in finite-size islands.
authors.affiliation: O. V. Lounasmaa Laboratory (LTL), Aalto University, P. O. Box 15100, FI-00076 AALTO, Finland.
authors.forename: Joel
authors.initials: J
authors.lastname: Röntynen
authors.affiliation: O. V. Lounasmaa Laboratory (LTL), Aalto University, P. O. Box 15100, FI-00076 AALTO, Finland.
authors.forename: Teemu
authors.initials: T
authors.lastname: Ojanen