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| Magnetotransport Properties in High-Quality Ultrathin Two-Dimensional Superconducting Mo2C Crystals | |
| Wang, Libin; Xu, Chuan; Liu, Zhibo; Chen, Long; Ma, Xiuliang; Cheng, Hui-Ming; Ren, Wencai; Kang, Ning; Kang, N (reprint author), Peking Univ, Key Lab Phys & Chem Nanodevices, Beijing 100871, Peoples R China.; Kang, N (reprint author), Peking Univ, Dept Elect, Beijing 100871, Peoples R China.; Ren, WC (reprint author), Chinese Acad Sci, Shenyang Natl Lab Mat Sci, Inst Met Res, Shenyang 110016, Peoples R China. | |
| 2016-04-01 | |
| Source Publication | ACS NANO
 |
| ISSN | 1936-0851 |
| Volume | 10Issue:4Pages:4504-4510 |
| Abstract | Ultrathin transition metal carbides are a class of developing two-dimensional (2D) materials with superconductivity and show great potentials for electrical energy storage and other applications. Here, we report low temperature magnetotransport measurements on high quality ultrathin 2D superconducting alpha-Mo2C crystals synthesized by a chemical vapor deposition method. The magnetoresistance curves exhibit reproducible oscillations at low magnetic fields for temperature far below the superconducting transition temperature of the crystals. We interpret the oscillatory magnetoresistance as a consequence of screening currents circling around the boundary of triangle-shaped terraces found on the surface of ultrathin Mo2C crystals. As the sample thickness decreases, the Mo2C crystals exhibit negative magnetoresistance deep in the superconducting transition regime, which reveals strong phase fluctuations of the superconducting order parameters associated with the superconductor insulator transition. Our results demonstrate that the ultrathin superconducting Mo2C crystals provide an interesting system for studying rich transport phenomena in a 2D crystalline superconductor with enhanced quantum fluctuations. |
| description.department | [wang, libin ; kang, ning] peking univ, key lab phys & chem nanodevices, beijing 100871, peoples r china ; [wang, libin ; kang, ning] peking univ, dept elect, beijing 100871, peoples r china ; [xu, chuan ; liu, zhibo ; chen, long ; ma, xiuliang ; cheng, hui-ming ; ren, wencai] chinese acad sci, shenyang natl lab mat sci, inst met res, shenyang 110016, peoples r china |
| Keyword | Transition Metal Carbides Two-dimensional Superconductivity Magnetotransport Properties |
| Subject Area | Chemistry ; Science & Technology - Other Topics ; Materials Science |
| Funding Organization | National Natural Science Foundation of China [11374019, 51325205, 51290273, 51521091, 51172240]; Chinese Academy of Sciences [KGZD-EW-303-1] |
| Indexed By | sci |
| Language | 英语 |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/75918 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Kang, N (reprint author), Peking Univ, Key Lab Phys & Chem Nanodevices, Beijing 100871, Peoples R China.; Kang, N (reprint author), Peking Univ, Dept Elect, Beijing 100871, Peoples R China.; Ren, WC (reprint author), Chinese Acad Sci, Shenyang Natl Lab Mat Sci, Inst Met Res, Shenyang 110016, Peoples R China. |
| Recommended Citation GB/T 7714 | Wang, Libin,Xu, Chuan,Liu, Zhibo,et al. Magnetotransport Properties in High-Quality Ultrathin Two-Dimensional Superconducting Mo2C Crystals[J]. ACS NANO,2016,10(4):4504-4510. |
| APA | Wang, Libin.,Xu, Chuan.,Liu, Zhibo.,Chen, Long.,Ma, Xiuliang.,...&Ren, WC .(2016).Magnetotransport Properties in High-Quality Ultrathin Two-Dimensional Superconducting Mo2C Crystals.ACS NANO,10(4),4504-4510. |
| MLA | Wang, Libin,et al."Magnetotransport Properties in High-Quality Ultrathin Two-Dimensional Superconducting Mo2C Crystals".ACS NANO 10.4(2016):4504-4510. |
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