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Distinct superconducting properties and hydrostatic pressure effects in 2D alpha- and beta-Mo2C crystal sheets
Fan, Yunjie1,2; Xu, Chuan3; Liu, Xiang1,2; Ma, Chao1,2; Yin, Yuewei1,2; Cheng, Hui-Ming3,4; Ren, Wencai3,4; Li, Xiaoguang1,2,5,6
Corresponding AuthorYin, Yuewei(yyw@ustc.edu.cn) ; Ren, Wencai(wcren@imr.ac.cn) ; Li, Xiaoguang(lixg@ustc.edu.cn)
2020-09-11
Source PublicationNPG ASIA MATERIALS
ISSN1884-4049
Volume12Issue:1Pages:9
AbstractRecently, 2D Mo2C, a new member of the MXene family, has attracted much attention due to the exotic superconducting properties discovered in 2D alpha-Mo2C. Here, not only 2D alpha-Mo2C but also 2D beta-Mo2C crystal sheets with distinct disordered carbon distributions were successfully grown. 2D beta-Mo2C shows a much stronger superconductivity than 2D alpha-Mo2C, and their superconductivities have different hydrostatic pressure responses. The superconducting transition temperatureT(c)of 2D alpha-Mo2C shows a dome-shaped profile under pressure, implying the existence of two competing effects arising from phononic and electronic properties, while for 2D beta-Mo2C,T(c)decreases monotonically with increasing pressure, possibly due to phonon stiffening. These results indicate that the electronic properties have a more important influence on the superconductivity in 2D alpha-Mo2C compared to 2D beta-Mo2C. The ordered and disordered carbon distributions in 2D alpha-Mo2C and beta-Mo2C, respectively, may be the underlying origin for their different electronic and superconducting properties.
Funding OrganizationNational Natural Science Foundation of China ; National Key Research and Development Program of China ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Youth Innovation Promotion Association of the Chinese Academy of Sciences
DOI10.1038/s41427-020-00242-3
Indexed BySCI
Language英语
Funding ProjectNational Natural Science Foundation of China[51790491] ; National Natural Science Foundation of China[21521001] ; National Natural Science Foundation of China[51972296] ; National Natural Science Foundation of China[51325205] ; National Natural Science Foundation of China[51290273] ; National Natural Science Foundation of China[51802314] ; National Key Research and Development Program of China[2016YFA0300103] ; National Key Research and Development Program of China[2019YFA0307900] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDB30000000] ; Youth Innovation Promotion Association of the Chinese Academy of Sciences[2018223]
WOS Research AreaMaterials Science
WOS SubjectMaterials Science, Multidisciplinary
WOS IDWOS:000571838900002
PublisherNATURE RESEARCH
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/140582
Collection中国科学院金属研究所
Corresponding AuthorYin, Yuewei; Ren, Wencai; Li, Xiaoguang
Affiliation1.Univ Sci & Technol China, Hefei Natl Lab Phys Sci Microscale, Dept Phys, Hefei 230026, Peoples R China
2.Univ Sci & Technol China, CAS Key Lab Strongly Coupled Quantum Matter Phys, Hefei 230026, Peoples R China
3.Chinese Acad Sci, Shenyang Natl Lab Mat Sci, Inst Met Res, Shenyang 110016, Peoples R China
4.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China
5.Chinese Acad Sci, Inst Solid State Phys, Key Lab Mat Phys, Hefei 230026, Peoples R China
6.Collaborat Innovat Ctr Adv Microstruct, Nanjing 210093, Peoples R China
Recommended Citation
GB/T 7714
Fan, Yunjie,Xu, Chuan,Liu, Xiang,et al. Distinct superconducting properties and hydrostatic pressure effects in 2D alpha- and beta-Mo2C crystal sheets[J]. NPG ASIA MATERIALS,2020,12(1):9.
APA Fan, Yunjie.,Xu, Chuan.,Liu, Xiang.,Ma, Chao.,Yin, Yuewei.,...&Li, Xiaoguang.(2020).Distinct superconducting properties and hydrostatic pressure effects in 2D alpha- and beta-Mo2C crystal sheets.NPG ASIA MATERIALS,12(1),9.
MLA Fan, Yunjie,et al."Distinct superconducting properties and hydrostatic pressure effects in 2D alpha- and beta-Mo2C crystal sheets".NPG ASIA MATERIALS 12.1(2020):9.
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