title: Induced topological phases at the boundary of 3D topological superconductors.
abstract: We present tight-binding models of 3D topological superconductors in class DIII that support a variety of winding numbers. We show that gapless Majorana surface states emerge at their boundary in agreement with the bulk-boundary correspondence. At the presence of a Zeeman field, the surface states become gapped and the boundary behaves as a 2D superconductor in class D. Importantly, the 2D and 3D winding numbers are in agreement, signifying that the topological phase of the boundary is induced by the phase of the 3D bulk. Hence, the boundary of a 3D topological superconductor in class DIII can be used for the robust realization of localized Majorana zero modes.
authors.affiliation: School of Physics and Astronomy, University of Leeds, Leeds, LS2 9JT, United Kingdom.
authors.forename: Peter
authors.initials: P
authors.lastname: Finch
authors.affiliation: School of Physics and Astronomy, University of Leeds, Leeds, LS2 9JT, United Kingdom.
authors.forename: James
authors.initials: J
authors.lastname: de Lisle
authors.affiliation: School of Physics and Astronomy, University of Leeds, Leeds, LS2 9JT, United Kingdom.
authors.forename: Giandomenico
authors.initials: G
authors.lastname: Palumbo
authors.affiliation: School of Physics and Astronomy, University of Leeds, Leeds, LS2 9JT, United Kingdom.
authors.forename: Jiannis K
authors.initials: JK
authors.lastname: Pachos