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.

中文翻译：

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三端混合器件的电导矩阵对称性。

我们介绍了由两个正常引线和一个超导引线组成的三端超导体-半导体混合器件的电导矩阵测量。使用电导的对称分解，我们发现在超导间隙以下的能量处，成对的局部和非局部电导对的反对称分量在质量上匹配，并将此发现与基于非相互作用散射矩阵方法的对称关系进行比较。此外，从对称分解的电导数据中提取了安德烈耶夫束缚态的局部电荷特征，发现在器件的两端相似，并且可以通过栅极电压调节。最后，我们测量作为磁场函数的电导矩阵，并确定低能特征中的相关分裂，