2019/05/14 by Gerbold C. Ménard, G. C. Ménard, G. L. R. Anselmetti +21 · 3 citations
Physics and Astronomy · #Antisymmetric relation #Bound state #Charge (physics) #Condensed matter physics #Conductance #Homogeneous space #MAJORANA #Materials science #Mathematical physics #Matrix (chemical analysis) #Physics #Physics of Superconductivity and Magnetism #Quantum and electron transport phenomena #Quantum mechanics #Scattering #Superconductivity #Symmetry (geometry) #Topological Materials and Phenomena #cond-mat.mes-hall #cond-mat.supr-con
paper · pdf · doi:10.1103/physrevlett.124.036802
published as Phys. Rev. Lett. 124, 036802 (2020) · 6 + 2 pages, 4 + 2 figures
arxiv created 2019/05/14 · openalex publication_date 2020/01/22 · arxiv updated 2020/01/24 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
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.