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arXiv · 1302.2736

Topological pumping in class-D superconducting wires

Marco Gibertini·Rosario Fazio·Marco Polini·Fabio Taddei
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Abstract

We study adiabatic pumping at a normal metal/class-D superconductor hybrid interface when superconductivity is induced through the proximity effect in a spin-orbit coupled nanowire in the presence of a tilted Zeeman field. When the induced order parameter in the nanowire is non-uniform, the phase diagram has isolated trivial regions surrounded by topological ones. We show that in this case the pumped charge is quantized in units of the elementary charge $e$ and has a topological nature.

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Marco Gibertini, Rosario Fazio, Marco Polini, Fabio Taddei. 2013-02-12. Topological pumping in class-D superconducting wires. https://doi.org/10.1103/physrevb.88.140508

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