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

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.

7 pages, 2 figures

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Cited by in corpus (9)

• On controlling the bound states in quantum-dot hybrid-nanowire
• Spin-polarized Andreev tunneling through the Rashba chain
• Identifying Majorana bound states by tunneling shot-noise tomography
• Majorana bound states in a superconducting Rashba nanowire in the presence of antiferromagnetic order
• Single-electron charge transfer into putative Majorana and trivial modes in individual vortices
• Majorana correlations in quantum impurities coupled to a topological wire
• Majorana Bound States hallmark in a quantum topological interferometer ring
• Majorana Bound State leakage to impurity in Su-Schrieffer-Heeger-Rashba scenario
• Cross-correlation mediated by Majorana island with finite charging energy