• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to project page

2023 Fiscal Year Final Research Report

Experimental estimation of spin polarisation in triplet supercurrent

Research Project

  • PDF
Project/Area Number 20K05304
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 29010:Applied physical properties-related
Research InstitutionKindai University (2023)
Kyushu University (2020-2022)

Principal Investigator

Ohnishi Kohei  近畿大学, 理工学部, 准教授 (30722293)

Project Period (FY) 2020-04-01 – 2024-03-31
Keywordsスピン流 / 超伝導 / スピン偏極準粒子 / スピンバルブ測定
Outline of Final Research Achievements

Spin-polarized superconducting currents in superconductors maximize the energy-saving and quantum mechanical properties of spintronics. Although this superconducting spin current has recently been realized using triplet Cooper pairs generated at the interface between a ferromagnet and a superconductor with controlled magnetization, direct evidence of a spin-polarized state has not yet been found. In this study, we have clarified the relaxation process of the spin-polarized superconducting current in the superconductor, which enables us to quantitatively measure the spin polarization.

Free Research Field

超伝導スピントロニクス

Academic Significance and Societal Importance of the Research Achievements

本研究の成果は、トリプレット超伝導電流を複合ナノ構造中において制御する手法を提案する。未だ微細加工技術が限られたトリプレット超伝導体に代わり、従来の超伝導体を用いてスピン偏極超伝導電流の制御を実現することは、超伝導スピン流のスピンデバイス応用への道を大きく切り拓くものである。また、超伝導電流中のスピン偏極率測定への足掛かりを形成するものであり、将来的な超伝導スピン流のモデル化を可能とし、超伝導スピントロニクスを大きく発展させると期待される。

URL: 

Published: 2025-01-30  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi