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Experimental phase diagram of zero-bias conductance peaks in superconductor/semiconductor nanowire devices.

ABSTRACT: Topological superconductivity is an exotic state of matter characterized by spinless p-wave Cooper pairing of electrons and by Majorana zero modes at the edges. The first signature of topological superconductivity is a robust zero-bias peak in tunneling conductance. We perform tunneling experiments on semiconductor nanowires (InSb) coupled to superconductors (NbTiN) and establish the zero-bias peak phase in the space of gate voltage and external magnetic field. Our findings are consistent with calculations for a finite-length topological nanowire and provide means for Majorana manipulation as required for braiding and topological quantum bits.

SUBMITTER: Chen J

PROVIDER: S-EPMC5590778 | biostudies-literature | 2017 Sep

REPOSITORIES: biostudies-literature

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Experimental phase diagram of zero-bias conductance peaks in superconductor/semiconductor nanowire devices.

Chen Jun J Yu Peng P Stenger John J Hocevar Moïra M Car Diana D Plissard Sébastien R SR Bakkers Erik P A M EPAM Stanescu Tudor D TD Frolov Sergey M SM

Science advances 20170908 9

Topological superconductivity is an exotic state of matter characterized by spinless p-wave Cooper pairing of electrons and by Majorana zero modes at the edges. The first signature of topological superconductivity is a robust zero-bias peak in tunneling conductance. We perform tunneling experiments on semiconductor nanowires (InSb) coupled to superconductors (NbTiN) and establish the zero-bias peak phase in the space of gate voltage and external magnetic field. Our findings are consistent with c ...[more]

PMID: 28913432

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