Pt Thickness Dependence of Superconductivity in Fe/Pt-Inserted Nb/V/Ta Superconducting Superlattices

The superconducting diode effect (SDE), in which a superconducting current flows in one direction and an ohmic current flows in the opposite direction, is expected to be applied to low-power electronic devices. Among the materials exhibiting a remarkable superconducting diode effect are Nb/V/Ta superconducting superlattices. In particular, Fe/Pt-inserted Nb/V/Ta superlattices exhibit a large zero-field SDE, suggesting that the strong spin-orbit coupling of Pt plays a significant role in its emergence. In this study, we investigated the Pt thickness dependence of superconductivity in Fe/Pt-inserted Nb/V/Ta superlattices. We found that the superconducting transition temperature, critical current density, and non-reciprocal critical current density increased with increasing Pt film thickness and saturated at about 3 nm.

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Publication Details

Journal
Journal of the Magnetics Society of Japan
Published
2025-10-02
DOI
https://doi.org/10.3379/msjmag.2511r001
Primary Topic
Physics of Superconductivity and Magnetism
Type
article
Field-Weighted Citation Impact
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article

Pt Thickness Dependence of Superconductivity in Fe/Pt-Inserted Nb/V/Ta Superconducting Superlattices

Ryusuke Hisatomi, Yoichi Shiota, Ryosuke Iijima, Ryo Kawarazaki et al.
Journal of the Magnetics Society of Japan
Physics of Superconductivity and Magnetism
article

Pt Thickness Dependence of Superconductivity in Fe/Pt-Inserted Nb/V/Ta Superconducting Superlattices

Ryusuke Hisatomi, Yoichi Shiota, Ryosuke Iijima, Ryo Kawarazaki, Hideki Narita, Takahito Ono, Shutaro Karube, F. Tokoro
article en

Abstract

The superconducting diode effect (SDE), in which a superconducting current flows in one direction and an ohmic current flows in the opposite direction, is expected to be applied to low-power electronic devices. Among the materials exhibiting a remarkable superconducting diode effect are Nb/V/Ta superconducting superlattices. In particular, Fe/Pt-inserted Nb/V/Ta superlattices exhibit a large zero-field SDE, suggesting that the strong spin-orbit coupling of Pt plays a significant role in its emergence. In this study, we investigated the Pt thickness dependence of superconductivity in Fe/Pt-inserted Nb/V/Ta superlattices. We found that the superconducting transition temperature, critical current density, and non-reciprocal critical current density increased with increasing Pt film thickness and saturated at about 3 nm.

Journal of the Magnetics Society of JapanVol. 49(6)
Kyoto University (JP), Spintronics Research Network of Japan (JP), Instituto de Investigaciones Químicas (ES), BioElectronics (United States) (US), Kyoto University Institute for Chemical Research, Nagoya University (JP)
Ministry of Education, Culture, Sports, Science and Technology, Japan Society for the Promotion of Science, Institute for Chemical Research, Kyoto University, Precursory Research for Embryonic Science and Technology
Openalex Percentile: Top 83%
Physics of Superconductivity and Magnetism
DOIOpen Access PDFOpenAlex
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Pt Thickness Dependence of Superconductivity in Fe/Pt-Inserted Nb/V/Ta Superconducting Superlattices — Ryusuke Hisatomi, Yoichi Shiota, et al. · Journal of the Magnetics Society of Japan (2025) | TGRS Research Map | TGRS