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Effects of domain structures on vortex state of two-dimensional superconducting Mo2C crystals
Liu, Zhen; Wang, Cheng; Xu, Chuan; Hao, Meng; Chen, Hui-Ming; Ren, Wencai; Kang, Ning
2019-04-01
Source Publication2D MATERIALS
ISSN2053-1583
Volume6Issue:2
AbstractUnderstanding of superconducting phase and vortex states in two-dimensional (2D) superconductors is fundamentally and technologically important. Here we report on low-temperature transport measurements on high-quality ultrathin superconducting Mo2C crystals containing well-defined line-shaped domain boundaries. We observe pronounced two-stage resistive transition accompanied by an appearance of kink structure well below the superconducting transition temperature, which is related to the development of one dimensional (1D) superconducting phase within the domain boundaries. The resistive transition under the magnetic fields is found to be well described by the thermally assisted collective flux creep model. The magnetic field dependence of activation energy barrier exhibits an enhancement at low fields, indicating a dimensional crossover from 2D to 1D vortex states in Mo2C crystals. We obtain the entire magnetic field-temperature phase diagram of ultrathin Mo2C crystals, revealing the existence of additional 1D vortex state induced by the domain boundaries. Our results demonstrate that the domain structures play an important role in determining the superconducting phase and vortex dynamics of 2D superconductors.
Keywordtwo-dimensional superconductors domain boundaries transition metal carbides
Indexed BySCI
Language英语
WOS IDWOS:000462120400001
PublisherIOP PUBLISHING LTD
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/81223
Collection中国科学院金属研究所
Recommended Citation
GB/T 7714
Liu, Zhen,Wang, Cheng,Xu, Chuan,et al. Effects of domain structures on vortex state of two-dimensional superconducting Mo2C crystals[J]. 2D MATERIALS,2019,6(2).
APA Liu, Zhen.,Wang, Cheng.,Xu, Chuan.,Hao, Meng.,Chen, Hui-Ming.,...&Kang, Ning.(2019).Effects of domain structures on vortex state of two-dimensional superconducting Mo2C crystals.2D MATERIALS,6(2).
MLA Liu, Zhen,et al."Effects of domain structures on vortex state of two-dimensional superconducting Mo2C crystals".2D MATERIALS 6.2(2019).
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