Quantum plateau of Andreev reflection induced by spin-orbit coupling
Luting Xu, Xin-Qi Li
TL;DR
This paper reveals a quantum plateau in Andreev reflection in a 1D quantum wire-superconductor system, achieved by tuning spin-orbit coupling and tunnel coupling, with implications for quantum transport control.
Contribution
It demonstrates a unique quantum plateau in Andreev reflection caused by spin-orbit coupling, distinct from other multi-channel or impurity-influenced systems.
Findings
Quantum plateau observed in Andreev reflection
Plateau achieved by tuning spin-orbit and tunnel couplings
Plateau is unique, excluding other multi-channel or impurity effects
Abstract
In this work we uncover an interesting quantum plateau behavior for the Andreev reflection between a one-dimensional quantum wire and superconductor. The quantum plateau is achieved by properly tuning the interplay of the spin-orbit coupling within the quantum wire and its tunnel coupling to the superconductor. This plateau behavior is justified to be unique by excluding possible existences in the cases associated with multi-channel quantum wire, the Blonder-Tinkham-Klapwijk continuous model with a barrier, and lattice system with on-site impurity at the interface.
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