| Effects of domain structures on vortex state of two-dimensional superconducting Mo2C crystals | |
| Liu,Zhen1; Wang,Cheng1; Xu,Chuan2; Hao,Meng1; Cheng,Hui-Ming2; Ren,Wencai2; Kang,Ning1,3 | |
| 2019-03-22 | |
| 发表期刊 | 2D Materials
 |
| ISSN | 2053-1583 |
| 卷号 | 6期号:2 |
| 摘要 | Abstract Understanding 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. |
| 关键词 | two-dimensional superconductors domain boundaries transition metal carbides |
| DOI | 10.1088/2053-1583/ab0d2e |
| 语种 | 英语 |
| WOS记录号 | IOP:2053-1583-6-2-ab0d2e |
| 出版者 | IOP Publishing |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.imr.ac.cn/handle/321006/80538 |
| 专题 | 中国科学院金属研究所 |
| 作者单位 | 1.Key Laboratory for the Physics and Chemistry of Nanodevices and Department of Electronics, Peking University, Beijing 100871, People’s Republic of China 2.Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, People’s Republic of China 3.Author to whom any correspondence should be addressed. |
| 推荐引用方式 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.,Cheng,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). |
| 条目包含的文件 | 条目无相关文件。 | |||||
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