Nodeless two-gap superconductivity revealed by low-temperature specific heat and lower critical field in 4Ha-NbSe2

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成果类型：

期刊论文

作者：

Zhou, Menghu;Ni, Shunli;Shi, Yunqing;Chen, Lewei;Yi, Junkun;...

通讯作者：

Zhou, MH;Ni, SL

作者机构：

[Zhou, Menghu; Shi, Yunqing; Gu, Yadong; Liu, Qingsong; Yang, Qingsong; Ren, Zhi-An; Yi, Junkun; Ruan, Binbin; Chen, Lewei] Chinese Acad Sci, Beijing Natl Lab Condensed Matter Phys, Inst Phys, Beijing 100190, Peoples R China.

[Zhou, Menghu] Hunan Inst Technol, Sch Sci, Hengyang 421002, Peoples R China.

[Ni, Shunli; Ni, SL] Univ South China, Sch Math & Phys, Hengyang 421001, Peoples R China.

[Shi, Yunqing; Liu, Qingsong; Yang, Qingsong; Ren, Zhi-An; Yi, Junkun; Chen, Lewei] Univ Chinese Acad Sci, Sch Phys Sci, Beijing 100049, Peoples R China.

[Yu, Jia] Quantum Sci Ctr, Guangdong Hong Kong Macao Greater Bay Area, Hong Kong 518045, Peoples R China.

通讯机构：

[Zhou, MH ] C

[Ni, SL ] U

Chinese Acad Sci, Beijing Natl Lab Condensed Matter Phys, Inst Phys, Beijing 100190, Peoples R China.

Hunan Inst Technol, Sch Sci, Hengyang 421002, Peoples R China.

Univ South China, Sch Math & Phys, Hengyang 421001, Peoples R China.

语种：

英文

期刊：

PHYSICAL REVIEW B

ISSN：

2469-9950

年：

2025

卷：

111

期：

DOI：

10.1103/PhysRevB.111.024513

基金类别：

National Natural Science Foundation of China [12074414]; National Key Research and Development Program of China [2018YFA0704200, 2021YFA1401800]; Excellent Youth Funding of Hunan Provincial Education Department [23B0435]; Open Project of Guangdong Provincial Key Lab-oratory of Magnetoelectric Physics and Devices [2020B1212060030]; Synergetic Extreme Condi-tion User Facility (SECUF)

机构署名：

本校为通讯机构

院系归属：

数理学院

摘要：

4Ha-NbSe2 single crystals were grown by the chemical vapor transport method followed by a quench to room temperature. The temperature-dependent magnetization and in-plane resistance reveal that the sample exhibits both charge-density-wave and superconducting orders, condensing at TCDW 43 K and Tc 6.5 K, respectively. The superconductivity was studied by specific heat and lower critical field (Hc1) down to 0.5 and 0.4 K, respectively. The electronic specific heat at superconducting state could be well described by an isotropic two-gap BCS model. The superconducting gaps were obtained to be of A...

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Nodeless two-gap superconductivity revealed by low-temperature specific heat and lower critical field in 4Ha-NbSe2

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