Physics

Bound state

Charge (physics)

MAJORANA

Symmetry (geometry)

Mathematics

Mathematical physics

Conductance

Matrix (chemical analysis)

Antisymmetric relation

Composite material

Scattering

Materials science

Geometry

Condensed matter physics

Superconductivity

Quantum mechanics

Homogeneous space

Physical Review Letters

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.

Conductance-Matrix Symmetries of a Three-Terminal Hybrid Device