Proposal for realizing Majorana fermions in chains of magnetic atoms on a superconductor

S. Nadj-Perge, I. K. Drozdov, B. A. Bernevig, Ali Yazdani
2013 Physical Review B  
We propose an easy-to-build easy-to-detect scheme for realizing Majorana fermions at the ends of a chain of magnetic atoms on the surface of a superconductor. Model calculations show that such chains can be easily tuned between trivial and topological ground state. In the latter, spatial resolved spectroscopy can be used to probe the Majorana fermion end states. Decoupled Majorana bound states can form even in short magnetic chains consisting of only tens of atoms. We propose scanning tunneling
more » ... microscopy as the ideal technique to fabricate such systems and probe their topological properties.
doi:10.1103/physrevb.88.020407 fatcat:qyo6mhgxhrdvtjzrti7tkx4ba4