Pressure-tuned structure and superconductivity in 2H-NbSe2

doi:10.1088/1674-1056/ae40db

中国物理B ›› 2026, Vol. 35 ›› Issue (5): 56401-056401.doi: 10.1088/1674-1056/ae40db

Pressure-tuned structure and superconductivity in 2H-NbSe₂

Chen-Yi Li(李晨一)¹, Zong-Lun Li(李宗伦)², Hui Tian(田辉)³, Guang-Rui Gu(顾广瑞)^4,†, Quan-Jun Li(李全军)¹, and Xue-Ting Zhang(张雪婷)^5,‡

1 State Key Laboratory of High Pressure and Superhard Materials, Jilin University, Changchun 130012, China;
2 School of Physical Science and Technology, Guangxi University, Nanning 530004, China;
3 School of Science, Shenyang Ligong University, Shenyang 110159, China;
4 Department of Physics, College of Science, Yanbian University, Yanji 133002, China;
5 School of Medical Information Engineering, Shenyang Medical College, Shenyang 110034, China

收稿日期:2025-12-01 修回日期:2026-01-20 接受日期:2026-02-03 发布日期:2026-04-29
通讯作者: Guang-Rui Gu,E-mail:grgu@ybu.edu.cn;Xue-Ting Zhang,E-mail:syyxy_zxt@163.com E-mail:grgu@ybu.edu.cn;syyxy_zxt@163.com
基金资助:
This work was supported by the Doctoral Research Startup Fund of Liaoning Province (Grant No. 2025-BS-0867).

Pressure-tuned structure and superconductivity in 2H-NbSe₂

Chen-Yi Li(李晨一)¹, Zong-Lun Li(李宗伦)², Hui Tian(田辉)³, Guang-Rui Gu(顾广瑞)^4,†, Quan-Jun Li(李全军)¹, and Xue-Ting Zhang(张雪婷)^5,‡

1 State Key Laboratory of High Pressure and Superhard Materials, Jilin University, Changchun 130012, China;
2 School of Physical Science and Technology, Guangxi University, Nanning 530004, China;
3 School of Science, Shenyang Ligong University, Shenyang 110159, China;
4 Department of Physics, College of Science, Yanbian University, Yanji 133002, China;
5 School of Medical Information Engineering, Shenyang Medical College, Shenyang 110034, China

Received:2025-12-01 Revised:2026-01-20 Accepted:2026-02-03 Published:2026-04-29
Contact: Guang-Rui Gu,E-mail:grgu@ybu.edu.cn;Xue-Ting Zhang,E-mail:syyxy_zxt@163.com E-mail:grgu@ybu.edu.cn;syyxy_zxt@163.com
Supported by:
This work was supported by the Doctoral Research Startup Fund of Liaoning Province (Grant No. 2025-BS-0867).

1. 2026-056401-SI.pdf(725KB)

摘要/Abstract

摘要： The structural and superconducting properties of 2H-NbSe$_{2}$ were systematically investigated under pressure up to 55.4 GPa using high-pressure electrical transport measurements, synchrotron radiation x-ray diffraction, and theoretical calculations. With increasing pressure, the enhanced interlayer coupling of 2H-NbSe$_{2}$ induces a structural transition from quasi-two dimensional to three dimensional. Meanwhile, accompanied by Fermi surface reconstruction, 2H-NbSe$_{2}$ exhibits a characteristic dome-shaped superconducting behavior, which provides valuable insights into the relationship between its superconducting properties and the structural transition.

关键词: 2H-NbSe$_{2}$, superconductivity, high pressure, phase transition

Abstract: The structural and superconducting properties of 2H-NbSe$_{2}$ were systematically investigated under pressure up to 55.4 GPa using high-pressure electrical transport measurements, synchrotron radiation x-ray diffraction, and theoretical calculations. With increasing pressure, the enhanced interlayer coupling of 2H-NbSe$_{2}$ induces a structural transition from quasi-two dimensional to three dimensional. Meanwhile, accompanied by Fermi surface reconstruction, 2H-NbSe$_{2}$ exhibits a characteristic dome-shaped superconducting behavior, which provides valuable insights into the relationship between its superconducting properties and the structural transition.

Key words: 2H-NbSe$_{2}$, superconductivity, high pressure, phase transition

中图分类号: (Structural transitions in nanoscale materials)

64.70.Nd

63.22.Np (Layered systems) 74.25.-q (Properties of superconductors) 74.62.Fj (Effects of pressure)

Chen-Yi Li(李晨一), Zong-Lun Li(李宗伦), Hui Tian(田辉), Guang-Rui Gu(顾广瑞), Quan-Jun Li(李全军), and Xue-Ting Zhang(张雪婷). Pressure-tuned structure and superconductivity in 2H-NbSe₂[J]. 中国物理B, 2026, 35(5): 56401-056401.

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Pressure-tuned structure and superconductivity in 2H-NbSe₂

Pressure-tuned structure and superconductivity in 2H-NbSe₂

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