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Large zero-bias peaks in InSb-Al hybrid semiconductor-superconductor nanowire devices

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arxiv 2101.11456 v1 pith:EKSROXZO submitted 2021-01-27 cond-mat.mes-hall

Hao Zhang , Michiel W.A. de Moor , Jouri D.S. Bommer , Di Xu , Guanzhong Wang , Nick van Loo , Chun-Xiao Liu , Sasa Gazibegovic
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John A. Logan Diana Car Roy L. M. Op het Veld Petrus J. van Veldhoven Sebastian Koelling Marcel A. Verheijen Mihir Pendharkar Daniel J. Pennachio Borzoyeh Shojaei Joon Sue Lee Chris J. Palmstr{o}m Erik P.A.M. Bakkers S. Das Sarma Leo P. Kouwenhoven
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classification cond-mat.mes-hall
keywords deviceslargestateshybridinsb-almagneticnanowirepeaks
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We report electron transport studies on InSb-Al hybrid semiconductor-superconductor nanowire devices. Tunnelling spectroscopy is used to measure the evolution of subgap states while varying magnetic field and voltages applied to various nearby gates. At magnetic fields between 0.7 and 0.9 T, the differential conductance contains large zero bias peaks (ZBPs) whose height reaches values on the order 2e2/h. We investigate these ZBPs for large ranges of gate voltages in different devices. We discuss possible interpretations in terms of disorder-induced subgap states, Andreev bound states and Majorana zero modes.

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Cited by 2 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Adiabatic nonabelian braiding of imperfect Majoranas

    cond-mat.mes-hall 2025-07 conditional novelty 7.0 of 10

    With a time-tuned correction coupling, braiding of imperfect (overlapping) Majoranas yields a nonabelian operation whose deviation from perfect Majorana braiding is given by an analytic formula, vanishing only in the ...

  2. Fermion parity and quantum capacitance oscillation with partially separated Majorana and quasi-Majorana modes

    cond-mat.mes-hall 2025-05 conditional novelty 6.0 of 10

    Flux-dependent quantum capacitance oscillations are shown to arise not only from topological Majorana zero modes but also from partially separated Majorana modes and trivial quasi-Majorana modes in disordered nanowires.

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