Structures, charge density wave, and superconductivity of noncentrosymmetric 4Ha-NbSe2

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成果类型：

期刊论文

作者：

Zhou, Menghu*;Gu, Yadong;Ni, Shunli;Ruan, Binbin;Liu, Qiaoyu;...

通讯作者：

Zhou, Menghu;Ren, Z

作者机构：

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

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

[Ren, Zhian; Shi, Yunqing; Chen, Genfu; Ren, Z; Yang, Qingsong; Liu, Qiaoyu; Yi, Junkun; Chen, Lewei] Univ Chinese Acad Sci, Sch Phys Sci, Beijing 100049, Peoples R China.

通讯机构：

[Zhou, MH; Ren, Z ] C

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

Univ Chinese Acad Sci, Sch Phys Sci, Beijing 100049, Peoples R China.

语种：

英文

期刊：

PHYSICAL REVIEW B

ISSN：

2469-9950

年：

2023

卷：

108

期：

页码：

224518

DOI：

10.1103/PhysRevB.108.224518

基金类别：

Program of China [2018YFA0704200, 2021YFA1401800]; Strategic Priority Research Program of Chinese Academy of Sciences [XDB25000000]; Excellent Youth Funding of Hunan Provincial Educa-tion Department [23B0435]

机构署名：

本校为其他机构

院系归属：

数理学院

摘要：

We report the crystal and electronic structures, charge density wave (CDW), and superconductivity of polycrystalline 4Ha-NbSe2 studied by x-ray diffraction, ab initio calculations, electrical resistivity, magnetization, and specific heat. 4Ha-NbSe2 has no central inversion symmetry (space group P-6m2), and the stacking-fault structure was observed in the crystal lattice. The weak CDW transition at TCDW -43 K thermodynamically is of second order. 4Ha-NbSe2 has a superconducting critical temperature Tc -6.4 K, which is a moderately coupled BCS superconductor with two-gap s +s-wave-like pairing. ...

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Structures, charge density wave, and superconductivity of noncentrosymmetric 4Ha-NbSe2

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