Erratum to: Confinement versus interface bound states in spin-orbit coupled nanowires Lorenzo Rossi, Fabrizio Dolcini and Fausto Rossi Eur. Phys. J. Plus, 135 10 (2020) 828 Published online: 14 October 2020 DOI: 10.1140/epjp/s13360-020-00656-6