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Strong anomalous proximity effect from spin-singlet superconductors

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Title: Strong anomalous proximity effect from spin-singlet superconductors
Authors: Ikegaya, Satoshi Browse this author
Lee, Jaechul Browse this author
Schnyder, Andreas P. Browse this author
Asano, Yasuhiro Browse this author →KAKEN DB
Issue Date: 8-Jul-2021
Publisher: American Physical Society (APS)
Journal Title: Physical Review B
Volume: 104
Issue: 2
Start Page: L020502
Publisher DOI: 10.1103/PhysRevB.104.L020502
Abstract: The proximity effect from a spin-triplet p(x)-wave superconductor to a dirty normal-metal has been shown to result in various unusual electromagnetic properties, reflecting a cooperative relation between topologically protected zero-energy quasiparticles and odd-frequency Cooper pairs. However, because of a lack of candidate materials for spin-triplet p(x)-wave superconductors, observing this effect has been difficult. In this paper, we demonstrate that the anomalous proximity effect, which is essentially equivalent to that of a spin-triplet p(x)-wave superconductor, can occur in a semiconductor/high-T-c cuprate superconductor hybrid device in which two potentials coexist: A spin-singlet d-wave pair potential and a spin-orbit coupling potential sustaining the persistent spin-helix state. As a result, we propose an alternative and promising route to observe the anomalous proximity effect related to the profound nature of topologically protected quasiparticles and odd-frequency Cooper pairs.
Rights: Copyright (2021) by The American Physical Society.
Type: article
Appears in Collections:工学院・工学研究院 (Graduate School of Engineering / Faculty of Engineering) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

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