Superlattice platform for chiral superconductivity with tuneable and high Chern numbers

Abstract

Finding concrete realizations for topologically nontrivial chiral superconductivity has been a long-standing goal in quantum matter research. Here we propose a route to a systematic realization of chiral superconductivity with nonzero Chern numbers. This goal can be achieved in a nanomagnet lattice deposited on top of a spin-orbit coupled two-dimensional electron gas (2DEG) with proximity s-wave superconductivity. The proposed structure can be regarded as a universal platform for chiral superconductivity supporting a large variety of topological phases. The topological state of the system can be electrically controlled by, for example, tuning the density of the 2DEG.

5+6 pages, 4 figures

References in corpus (5)

• Classification of topological insulators and superconductors in three spatial dimensions
• Observation of Majorana Fermions in Ferromagnetic Atomic Chains on a Superconductor
• Topological Yu-Shiba-Rusinov chain from spin-orbit coupling
• Impurity-induced bound states in superconductors with spin-orbit coupling
• Topological properties of helical Shiba chains with general impurity strength and hybridization