首页|Strong Anisotropic Order Parameters at All-Nitride Ferromagnet/Superconductor Interfaces

Strong Anisotropic Order Parameters at All-Nitride Ferromagnet/Superconductor Interfaces

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Proximity effects between superconductors and ferromagnets(SC/FM)hold paramount importance in com-prehending the spin competition transpiring at their interfaces.This competition arises from the interplay between Cooper pairs and ferromagnetic exchange interactions.The proximity effects between transition metal nitrides(TMNs)are scarcely investigated due to the formidable challenges of fabricating high-quality SC/FM interfaces.We fabricated heterostructures comprising SC titanium nitride(TiN)and FM iron nitride(Fe3N)with precise chemical compositions and atomically well-defined interfaces.The magnetoresistance of Fe3N/TiN heterostruc-tures shows a distinct magnetic anisotropy and strongly depends on the external perturbations.Moreover,the superconducting transition temperature Tc and critical field of TiN experience notable suppression when prox-imity to Fe3N.We observe the intriguing competition of interfacial spin orientations near TC(～1.25 K).These findings not only add a new materials system for investigating the interplay between superconductor and fer-romagnets,but also potentially provide a building block for future research endeavors and applications in the realms of superconducting spintronic devices.

Qiao Jin、Meng Yang、Guozhu Song、Nan Zhao、Shengru Chen、Haitao Hong、Ting Cui、Dongke Rong、Qianying Wang、Yiyan Fan、Chen Ge、Can Wang、Jiachang Bi、Yanwei Cao、Liusuo Wu、Shanmin Wang、Kui-Juan Jin、Zhi-Gang Cheng、Er-Jia Guo

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Beijing National Laboratory for Condensed Matter Physics,and Institute of Physics,Chinese Academy of Sciences,Beijing 100190,China

Department of Physics&Center of Materials Science and Optoelectronics Engineering,University of Chinese Academy of Sciences,Beijing 100049,China

Department of Physics,Southern University of Science and Technology,Shenzhen 518055,China

Songshan Lake Materials Laboratory,Dongguan 523808,China

Ningbo Institute of Materials Technology & Engineering,Chinese Academy of Sciences,Ningbo 315201,China

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National Key Research and Development Program of ChinaNational Key Research and Development Program of ChinaNational Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaCAS Project for Young Scientists in Basic ResearchSpecial Research AssistantStrategic Priority Research Program(B)of the Chinese Academy of SciencesChina Postdoctoral science FoundationGuangdong-Hong Kong-Macao Joint Laboratory for Neutron Scattering Science and Technology

2020YFA03091002019YFA0308500U22A202635225030811974390YSBR-084XDB330302002022M723353HT-CSNS-DG-CD-0080/2021

2024

10.1088/0256-307X/41/2/027402

中国物理快报(英文版)
中国科学院物理研究所,中国物理学会

中国物理快报(英文版)

CSTPCDEI
影响因子：0.515
ISSN：0256-307X
年,卷(期)：2024.41(2)
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