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arXiv · 1706.04838

Fingerprints of Majorana fermions in current-correlations measurements from a superconducting tunnel microscope

Pierre Devillard·Denis Chevallier·Mathias Albert
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Abstract

We compute various current correlation functions of electrons flowing from a topological nanowire to the tip of a superconducting scanning tunnel microscope and identify fingerprints of a Majorana bound state. In particular, the spin resolved cross-correlations are shown to display a clear distinction between the presence of a such an exotic state (negative correlations) and an Andreev bound state (positive correlations). Similarity and differences with measurements with a normal tunnel microscope are also discussed, like the robustness to finite temperature for instance.

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Pierre Devillard, Denis Chevallier, Mathias Albert. 2017-06-15. Fingerprints of Majorana fermions in current-correlations measurements from a superconducting tunnel microscope. https://doi.org/10.1103/physrevb.96.115413

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