TOPOLOGICAL SUPERCONDUCTIVITY IN QUASI-ONE DIMENSIONAL STRUCTURES

Abstract

A new class of superconducting quasi-one dimensional materials was suggested, where the
topological phase is realized even in the absence of an external magnetic field. Such time-reversal
invariant topological superconductors are fabricated by filling the superconducting materials into
the periodic channel of dielectric matrices like zeolite and asbestos under high pressure. The topological superconducting phase sets up in the presence of large spin-orbit interactions when s-wave
intra-wire and d-wave inter-wire pairings take place. Kramers pairs of Majorana bound states
emerge at the edges of each wire.
Keywords: superconductivity, Majorana fermions, topological dielectrics