Advantages of using YBCO-Nanowire-YBCO heterostructures in the search for Majorana Fermions

TL;DR

This paper proposes using YBCO-Nanowire-YBCO heterostructures with high-temperature cuprate superconductors to enhance the stability and detection of Majorana fermions in solid state systems, leveraging their large superconducting gap.

Contribution

It introduces a new platform employing high-temperature superconductors for Majorana fermion observation, expanding the experimental conditions and functionalities compared to existing methods.

Findings

Wider and more robust conditions for Majorana fermion stabilization.

Novel functionalities due to different dispersion of Andreev bound states.

Potential for improved experimental design in Majorana detection.

Abstract

We propose an alternative platform to observe Majorana bound states in solid state systems. High critical temperature cuprate superconductors can induce superconductivity, by proximity effect, in quasi one dimensional nanowires with strong spin orbit coupling. They favor a wider and more robust range of conditions to stabilize Majorana fermions due to the large gap values, and offer novel functionalities in the design of the experiments determined by different dispersion for Andreev bound states as a function of the phase difference.