Magnetotransport evidence for the coexistence of two-dimensional superconductivity and ferromagnetism at (111)-oriented a-CaZrO3/KTaO3 interfaces

Hui Zhang (), Yinan Xiao, Qixuan Gao, Ning Wu, Siyi Zhou, Yongchao Wang, Mengqin Wang, Daming Tian, Lu Chen, Weijian Qi, Dongyao Zheng, Jine Zhang, Furong Han, Huaiwen Yang, Banggui Liu, Yuansha Chen, Fengxia Hu, Baogen Shen, Jirong Sun (), Weisheng Zhao () and Jinsong Zhang ()
Additional contact information
Hui Zhang: Beihang University
Yinan Xiao: Beihang University
Qixuan Gao: Tsinghua University
Ning Wu: Chinese Academy of Sciences
Siyi Zhou: Tsinghua University
Yongchao Wang: Tsinghua University
Mengqin Wang: Chinese Academy of Sciences
Daming Tian: Beihang University
Lu Chen: Beihang University
Weijian Qi: Beihang University
Dongyao Zheng: Beihang University
Jine Zhang: Beihang University
Furong Han: Beihang University
Huaiwen Yang: Beihang University
Banggui Liu: Chinese Academy of Sciences
Yuansha Chen: Chinese Academy of Sciences
Fengxia Hu: Chinese Academy of Sciences
Baogen Shen: Chinese Academy of Sciences
Jirong Sun: Chinese Academy of Sciences
Weisheng Zhao: Beihang University
Jinsong Zhang: Tsinghua University

Nature Communications, 2025, vol. 16, issue 1, 1-11

Abstract: Abstract Exploring the intricate interplay between magnetism and superconductivity is crucial for unveiling the underlying mechanisms of unconventional superconductivity. Here, we report on the magnetotransport evidence for the coexistence of a two-dimensional (2D) superconducting state and a 2D ferromagnetic state at the interface between amorphous CaZrO3 film and (111)-oriented KTaO3 single crystal. Remarkably, the fingerprint of ferromagnetism, i.e., hysteretic magnetoresistance loops, is observed in the superconducting state. The butterfly-shaped hysteresis with twin peaks emerges against the background of superconducting zero resistance, and the peak amplitude increases with the sweep rate of the magnetic field, indicating that the magnetization dynamics are at play in the superconducting state. Moreover, the magnetoresistance hysteresis is strongly dependent on temperature, achieving a maximum near the superconducting transition temperature. This behavior is well described by the thermal activated phase slip model. Density function theory (DFT) calculations suggest that the magnetic moment is primarily contributed by the Ta 5dyz orbital, and the Stoner ferromagnetism is identified. Our findings provide new insights into the interaction of magnetism and superconductivity at KTaO3-based oxide heterointerfaces.

Date: 2025
References: Add references at CitEc
Citations:

Downloads: (external link)
https://www.nature.com/articles/s41467-025-58300-9 Abstract (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:nat:natcom:v:16:y:2025:i:1:d:10.1038_s41467-025-58300-9

Ordering information: This journal article can be ordered from
https://www.nature.com/ncomms/

DOI: 10.1038/s41467-025-58300-9

Access Statistics for this article

Nature Communications is currently edited by Nathalie Le Bot, Enda Bergin and Fiona Gillespie

More articles in Nature Communications from Nature
Bibliographic data for series maintained by Sonal Shukla () and Springer Nature Abstracting and Indexing ().