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arXiv · 1908.05549

End-to-end correlated subgap states in hybrid nanowires

G. L. R. Anselmetti·E. A. Martinez·G. C. Ménard·D. Puglia·F. K. Malinowski·J. S. Lee·S. Choi·M. Pendharkar·C. J. Palmstrøm·C. M. Marcus·L. Casparis·A. P. Higginbotham
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Abstract

End-to-end correlated bound states are investigated in superconductor-semiconductor hybrid nanowires at zero magnetic field. Peaks in subgap conductance are independently identified from each wire end, and a cross-correlation function is computed that counts end-to-end coincidences, averaging over thousands of subgap features. Strong correlations in a short, $300~\mathrm{nm}$ device are reduced by a factor of four in a long, $900~\mathrm{nm}$ device. In addition, subgap conductance distributions are investigated, and correlations between the left and right distributions are identified based on their mutual information.

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G. L. R. Anselmetti, E. A. Martinez, G. C. Ménard, D. Puglia, F. K. Malinowski, J. S. Lee, S. Choi, M. Pendharkar, C. J. Palmstrøm, C. M. Marcus, L. Casparis, A. P. Higginbotham. 2019-09-17. End-to-end correlated subgap states in hybrid nanowires. https://doi.org/10.1103/physrevb.100.205412

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