论文标题

栅极定义的Inas/Al纳米线中Andreev结合状态的非局部电导光谱

Nonlocal conductance spectroscopy of Andreev bound states in gate-defined InAs/Al nanowires

论文作者

Pöschl, Andreas, Danilenko, Alisa, Sabonis, Deividas, Kristjuhan, Kaur, Lindemann, Tyler, Thomas, Candice, Manfra, Michael J., Marcus, Charles M.

论文摘要

使用局部和非局部隧道光谱法测量了三末端半导体 - 导管杂交纳米线中Andreev结合状态(ABS)的电荷特征。该设备是使用带有几个栅极定义侧探针的二维异质结构制造的。发现ABS随栅极电压的函数而振荡左右,其电荷的修改与ABS的总Bardeen-Cooper-Schrieffer(BCS)电荷的理论期望一致。

The charge character of Andreev bound states (ABSs) in a three-terminal semiconductor-superconductor hybrid nanowire was measured using local and nonlocal tunneling spectroscopy. The device is fabricated using an epitaxial InAs/Al two-dimensional heterostructure with several gate-defined side probes. ABSs are found to oscillate around zero as a function of gate voltage, with modifications of their charge consistent with theoretical expectations for the total Bardeen-Cooper- Schrieffer (BCS) charge of ABSs.

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