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Title: Direct penetration of spin-triplet superconductivity into a ferromagnet in Au/SrRuO3/Sr2RuO4 junctions.
Authors: Anwar, M S
Lee, S R
Ishiguro, R
Sugimoto, Y
Tano, Y
Kang, S J
Shin, Y J
Yonezawa, S  kyouindb  KAKEN_id  orcid https://orcid.org/0000-0002-7476-3604 (unconfirmed)
Manske, D
Takayanagi, H
Noh, T W
Maeno, Y
Author's alias: 米澤, 進吾
前野, 悦輝
Issue Date: 26-Oct-2016
Publisher: Springer Nature
Journal title: Nature communications
Volume: 7
Thesis number: 13220
Abstract: Efforts have been ongoing to establish superconducting spintronics utilizing ferromagnet/superconductor heterostructures. Previously reported devices are based on spin-singlet superconductors (SSCs), where the spin degree of freedom is lost. Spin-polarized supercurrent induction in ferromagnetic metals (FMs) is achieved even with SSCs, but only with the aid of interfacial complex magnetic structures, which severely affect information imprinted to the electron spin. Use of spin-triplet superconductors (TSCs) with spin-polarizable Cooper pairs potentially overcomes this difficulty and further leads to novel functionalities. Here, we report spin-triplet superconductivity induction into a FM SrRuO3 from a leading TSC candidate Sr2RuO4, by fabricating microscopic devices using an epitaxial SrRuO3/Sr2RuO4 hybrid. The differential conductance, exhibiting Andreev-reflection features with multiple energy scales up to around half tesla, indicates the penetration of superconductivity over a considerable distance of 15 nm across the SrRuO3 layer without help of interfacial complex magnetism. This demonstrates potential utility of FM/TSC devices for superspintronics.
Description: 磁石に浸み込む超伝導電子ペアを実現 :スーパー・スピントロニクスへの布石. 京都大学プレスリリース. 2016-10-28.
Rights: © The Author(s) 2016. This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article's Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/
URI: http://hdl.handle.net/2433/217106
DOI(Published Version): 10.1038/ncomms13220
PubMed ID: 27782151
Related Link: https://www.kyoto-u.ac.jp/ja/research-news/2016-10-28-1
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