Proximity-Effect Induced Superconductivity in a Superconductor/Ferromagnetic-Metal van der Waals Heterojunction

Zhuoqing Gao; Fazhi Yang; Yang Zhang; Liqin Zhou; Liang Zhang; Cizhe Fang; Xiaoxi Li; Xiaozhi Wang; Xiangyu Zeng

doi:10.1002/qute.202500309

Proximity-Effect Induced Superconductivity in a Superconductor/Ferromagnetic-Metal van der Waals Heterojunction

Zhuoqing Gao
, Fazhi Yang
, Yang Zhang
, Liqin Zhou
, Liang Zhang
, Cizhe Fang
, Xiaoxi Li
, Xiaozhi Wang
, Xiangyu Zeng

Quantum Heterostructures

Research output: Contribution to journal › Article › peer-review

Abstract

The interplay between magnetism and superconductivity plays a crucial role in understanding unconventional superconductivity. Employing the proximity effect to realize superconductivity in ferromagnetic materials has generated widespread interest in achieving topological superconductivity and the novel Fulde−Ferrell−Larkin−Ovchinnikov state. Here, the proximity superconductivity is observed in a heterojunction of Fe₃GeTe₂ (FGT)/NbSe₂, in which FGT is a topological ferromagnetic material. The differential conductance of heterojunction shows three pairs of peaks, indicative of three superconducting phases (NbSe₂, proximate NbSe₂, and proximate FGT). The evolution of superconducting gaps adheres to Tinkham-Klapwijk theory and the superconducting gap in proximate FGT is estimated as ≈0.52 meV. Additionally, a non-reciprocal transport behavior is observed in the Josephson heterojunction of NbSe₂/FGT/NbSe₂. In this work, the interplay between ferromagnetism and superconductivity is explored systematically, providing a potential pathway for the realization of novel superconductivity.

Original language	English
Article number	e00309
Journal	Advanced Quantum Technologies
Volume	8
Issue number	11
DOIs	https://doi.org/10.1002/qute.202500309
State	Published - Nov 2025

Funding

This work was supported by the following programs: the National Natural Science Foundation of China (62304166, 62174147), Key Research and Development Project of Zhejiang (2024C03114) and the National Key R&D Program of China (No. 2024YFF0727200). The authors gratefully acknowledge Dr. Jiabao Sun, Dr. Ying Sun, and Dr. Yanhua Liu of ZJU Micro-Nano Fabrication Center for their professional assistance, and Material Scientific Cores at Zhejiang Lab for their help with measurement and data interpretation. This work was supported by the following programs: the National Natural Science Foundation of China (62304166, 62174147), Key Research and Development Project of Zhejiang (2024C03114) and the National Key R&D Program of China (No. 2024YFF0727200). The authors gratefully acknowledge Dr. Jiabao Sun, Dr. Ying Sun, and Dr. Yanhua Liu of ZJU Micro‐Nano Fabrication Center for their professional assistance, and Material Scientific Cores at Zhejiang Lab for their help with measurement and data interpretation.

Keywords

andreev reflect
differential conductance spectra
ferromagnetism
proximity effect
superconductivity

Access to Document

10.1002/qute.202500309

Cite this

@article{f5a971afa57e4b3486fff8eab7e29dd1,

title = "Proximity-Effect Induced Superconductivity in a Superconductor/Ferromagnetic-Metal van der Waals Heterojunction",

abstract = "The interplay between magnetism and superconductivity plays a crucial role in understanding unconventional superconductivity. Employing the proximity effect to realize superconductivity in ferromagnetic materials has generated widespread interest in achieving topological superconductivity and the novel Fulde−Ferrell−Larkin−Ovchinnikov state. Here, the proximity superconductivity is observed in a heterojunction of Fe3GeTe2 (FGT)/NbSe2, in which FGT is a topological ferromagnetic material. The differential conductance of heterojunction shows three pairs of peaks, indicative of three superconducting phases (NbSe2, proximate NbSe2, and proximate FGT). The evolution of superconducting gaps adheres to Tinkham-Klapwijk theory and the superconducting gap in proximate FGT is estimated as ≈0.52 meV. Additionally, a non-reciprocal transport behavior is observed in the Josephson heterojunction of NbSe2/FGT/NbSe2. In this work, the interplay between ferromagnetism and superconductivity is explored systematically, providing a potential pathway for the realization of novel superconductivity.",

keywords = "andreev reflect, differential conductance spectra, ferromagnetism, proximity effect, superconductivity",

author = "Zhuoqing Gao and Fazhi Yang and Yang Zhang and Liqin Zhou and Liang Zhang and Cizhe Fang and Xiaoxi Li and Xiaozhi Wang and Xiangyu Zeng",

note = "Publisher Copyright: {\textcopyright} 2025 Wiley-VCH GmbH.",

year = "2025",

month = nov,

doi = "10.1002/qute.202500309",

language = "English",

volume = "8",

journal = "Advanced Quantum Technologies",

issn = "2511-9044",

publisher = "wiley",

number = "11",

}

TY - JOUR

T1 - Proximity-Effect Induced Superconductivity in a Superconductor/Ferromagnetic-Metal van der Waals Heterojunction

AU - Gao, Zhuoqing

AU - Yang, Fazhi

AU - Zhang, Yang

AU - Zhou, Liqin

AU - Zhang, Liang

AU - Fang, Cizhe

AU - Li, Xiaoxi

AU - Wang, Xiaozhi

AU - Zeng, Xiangyu

PY - 2025/11

Y1 - 2025/11

N2 - The interplay between magnetism and superconductivity plays a crucial role in understanding unconventional superconductivity. Employing the proximity effect to realize superconductivity in ferromagnetic materials has generated widespread interest in achieving topological superconductivity and the novel Fulde−Ferrell−Larkin−Ovchinnikov state. Here, the proximity superconductivity is observed in a heterojunction of Fe3GeTe2 (FGT)/NbSe2, in which FGT is a topological ferromagnetic material. The differential conductance of heterojunction shows three pairs of peaks, indicative of three superconducting phases (NbSe2, proximate NbSe2, and proximate FGT). The evolution of superconducting gaps adheres to Tinkham-Klapwijk theory and the superconducting gap in proximate FGT is estimated as ≈0.52 meV. Additionally, a non-reciprocal transport behavior is observed in the Josephson heterojunction of NbSe2/FGT/NbSe2. In this work, the interplay between ferromagnetism and superconductivity is explored systematically, providing a potential pathway for the realization of novel superconductivity.

AB - The interplay between magnetism and superconductivity plays a crucial role in understanding unconventional superconductivity. Employing the proximity effect to realize superconductivity in ferromagnetic materials has generated widespread interest in achieving topological superconductivity and the novel Fulde−Ferrell−Larkin−Ovchinnikov state. Here, the proximity superconductivity is observed in a heterojunction of Fe3GeTe2 (FGT)/NbSe2, in which FGT is a topological ferromagnetic material. The differential conductance of heterojunction shows three pairs of peaks, indicative of three superconducting phases (NbSe2, proximate NbSe2, and proximate FGT). The evolution of superconducting gaps adheres to Tinkham-Klapwijk theory and the superconducting gap in proximate FGT is estimated as ≈0.52 meV. Additionally, a non-reciprocal transport behavior is observed in the Josephson heterojunction of NbSe2/FGT/NbSe2. In this work, the interplay between ferromagnetism and superconductivity is explored systematically, providing a potential pathway for the realization of novel superconductivity.

KW - andreev reflect

KW - differential conductance spectra

KW - ferromagnetism

KW - proximity effect

KW - superconductivity

UR - https://www.scopus.com/pages/publications/105013105813

U2 - 10.1002/qute.202500309

DO - 10.1002/qute.202500309

M3 - Article

AN - SCOPUS:105013105813

SN - 2511-9044

VL - 8

JO - Advanced Quantum Technologies

JF - Advanced Quantum Technologies

IS - 11

M1 - e00309

ER -

Proximity-Effect Induced Superconductivity in a Superconductor/Ferromagnetic-Metal van der Waals Heterojunction

Abstract

Funding

Keywords

Access to Document

Other files and links

Fingerprint

Cite this