Topological superconductivity in lead nanowires

Abstract

Superconductors with an odd number of bands crossing the Fermi energy have topologically protected Andreev states at interfaces, including Majorana states in one dimensional geometries. Superconductivity, a low number of 1D channels, large spin orbit coupling, and a sizeable Zeeman energy, are present in lead nanowires produced by nanoindentation of a Pb tip on a Pb substrate, in magnetic fields higher than the Pb bulk critical field. A number of such devices have been analyzed. In some of them, the dependence of the critical current on magnetic field, and the Multiple Andreev Reflections observed at finite voltages, are compatible with the existence of topological superconductivity.

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Cited by in corpus (13)

• Imaging superconducting vortex core and lattice with the scanning tunneling microscope
• Decaying spectral oscillations in a Majorana wire with finite coherence length
• Multiple Andreev reflection and critical current in topological superconducting nanowire junctions
• Topological superconductivity at the edge of transition metal dichalcogenides
• The fate and heir of Majorana zero modes in a quantum wire array
• Topological superconductivity and Majorana fermions in hybrid structures involving cuprate high-T_c superconductors
• Viewing Majorana Bound States by Rabi Oscillations
• Reentrant topological transitions with Majorana end states in 1D superconductors by lattice modulation
• Anisotropic superconductivity in ZrB${}_{12}$ near critical Bogomolnyi point
• Position-dependent effect of non-magnetic impurities on superconducting properties of nanowires
• Superconducting nanowire quantum interference device based on Nb ultrathin films deposited on self-assembled porous Si templates
• Effects of spin orbit coupling on proximity induced superconductivity
• Majorana Fermions in Topological Superconducting Metallic Nanowires probed by a Superconducting Condensate