Conductance-matrix symmetries of a three-terminal hybrid device

G.C. Ménard, G.L.R. Anselmetti, E.A. Martinez, D. Puglia, F.K. Malinowski, J.S. Lee, S. Choi, M. Pendharkar, C.J. Palmstrøm, K. Flensberg, C.M. Marcus, L. Casparis, A.P. Higginbotham, Physical Review Letters 124 (2020) 036802.


Journal Article | Published | English
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Abstract
We present conductance-matrix measurements of a three-terminal superconductor-semiconductor hybrid device consisting of two normal leads and one superconducting lead. Using a symmetry decomposition of the conductance, we find that antisymmetric components of pairs of local and nonlocal conductances qualitatively match at energies below the superconducting gap, and we compare this finding with symmetry relations based on a noninteracting scattering matrix approach. Further, the local charge character of Andreev bound states is extracted from the symmetry-decomposed conductance data and is found to be similar at both ends of the device and tunable with gate voltage. Finally, we measure the conductance matrix as a function of magnetic field and identify correlated splittings in low-energy features, demonstrating how conductance-matrix measurements can complement traditional single-probe measurements in the search for Majorana zero modes.
Publishing Year
Date Published
2020-01-24
Journal Title
Physical Review Letters
Volume
124
Issue
3
Article Number
036802
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Cite this

Ménard GC, Anselmetti GLR, Martinez EA, et al. Conductance-matrix symmetries of a three-terminal hybrid device. Physical Review Letters. 2020;124(3):036802. doi:10.1103/physrevlett.124.036802
Ménard, G. C., Anselmetti, G. L. R., Martinez, E. A., Puglia, D., Malinowski, F. K., Lee, J. S., … Higginbotham, A. P. (2020). Conductance-matrix symmetries of a three-terminal hybrid device. Physical Review Letters, 124(3), 036802. https://doi.org/10.1103/physrevlett.124.036802
Ménard, G. C., G. L. R. Anselmetti, E. A. Martinez, D. Puglia, F. K. Malinowski, J. S. Lee, S. Choi, et al. “Conductance-Matrix Symmetries of a Three-Terminal Hybrid Device.” Physical Review Letters 124, no. 3 (2020): 036802. https://doi.org/10.1103/physrevlett.124.036802.
G. C. Ménard et al., “Conductance-matrix symmetries of a three-terminal hybrid device,” Physical Review Letters, vol. 124, no. 3, p. 036802, 2020.
Ménard GC, Anselmetti GLR, Martinez EA, Puglia D, Malinowski FK, Lee JS, Choi S, Pendharkar M, Palmstrøm CJ, Flensberg K, Marcus CM, Casparis L, Higginbotham AP. 2020. Conductance-matrix symmetries of a three-terminal hybrid device. Physical Review Letters. 124(3), 036802.
Ménard, G. C., et al. “Conductance-Matrix Symmetries of a Three-Terminal Hybrid Device.” Physical Review Letters, vol. 124, no. 3, APS, 2020, p. 036802, doi:10.1103/physrevlett.124.036802.

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