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 superconductivity and that its topological phase diagram contains Chern numbers higher than , where is the superconducting coherence length and is the distance between the magnetic atoms. The signatures of nontrivial topology can be observed by STM spectroscopy in finite-size islands.
- Received 18 December 2014
DOI:https://doi.org/10.1103/PhysRevLett.114.236803
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