1302.2736 (Marco Gibertini et al.)

Topological pumping in superconducting wires with Majorana fermions    [PDF]

Marco Gibertini, Rosario Fazio, Marco Polini, Fabio Taddei

We study adiabatic pumping in normal metal-superconductor hybrid systems when the superconductor is in symmetry class D and therefore exhibits a phase diagram with non-trivial regions associated with Majorana fermions. We show that topological quantization of the pumped charge occurs when the phase diagram has isolated trivial regions surrounded by topological ones. We propose a set-up where this physics emerges, which is based on a spin-orbit coupled superconducting nanowire in a tilted Zeeman field.

View original: http://arxiv.org/abs/1302.2736