High-T-c superconductivity in ultrathin Bi2Sr2CaCu2O8+x down to half-unit-cell thickness by protection with graphene
文献类型：期刊论文
| 作者 | Jiang, D ; Hu, T ; You, LX ; Li, Q ; Li, A ; Wang, HM ; Mu, G ; Chen, ZY ; Zhang, HR ; Yu, GH ; Zhu, J ; Sun, QJ ; Lin, CT ; Xiao, H ; Xie, XM ; Jiang, MH |
| 刊名 | NATURE COMMUNICATIONS
 |
| 出版日期 | 2014 |
| 卷号 | 5 |
| ISSN号 | 2041-1723 |
| 通讯作者 | Jiang, D (reprint author), Chinese Acad Sci, Shanghai Inst Microsyst & Informat Technol, State Key Lab Funct Mat Informat, 865 Changning Rd, Shanghai 200050, Peoples R China. |
| 中文摘要 | High-T-c superconductors confined to two dimension exhibit novel physical phenomena, such as superconductor-insulator transition. In the Bi2Sr2CaCu2O8+x (Bi2212) model system, despite extensive studies, the intrinsic superconducting properties at the thinness limit have been difficult to determine. Here, we report a method to fabricate high quality single-crystal Bi2212 films down to half-unit-cell thickness in the form of graphene/Bi2212 van der Waals heterostructure, in which sharp superconducting transitions are observed. The heterostructure also exhibits a nonlinear current-voltage characteristic due to the Dirac nature of the graphene band structure. More interestingly, although the critical temperature remains essentially the same with reduced thickness of Bi2212, the slope of the normal state T-linear resistivity varies by a factor of 4-5, and the sheet resistance increases by three orders of magnitude, indicating a surprising decoupling of the normal state resistance and superconductivity. The developed technique is versatile, applicable to investigate other two-dimensional (2D) superconducting materials. |
| 资助信息 | Strategic Priority Research Program (B) of the Chinese Academy of Sciences [XDB04010400, XDB04040300, XDB04020000]; National Science and Technology Major Project [2011ZX02707]; National Natural Science Foundation of China [11104303, 11274333, 11204339, 11104335, 61136005]; Chinese Academy of Sciences [KGZD-EW-303KJCX2-EW-W11, XDA02040000]; Hundred Talents Program of CAS, CAS International Collaboration and Innovation Program on High Mobility Materials Engineering, Science and Technology Commission of Shanghai Municipality [12JC1410100, 12JC1403900]; Ministry of Science and Technology of China [2011CBA00107, 2012CB921302] |
| 语种 | 英语 |
| 公开日期 | 2015-04-14 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/59376]  |
| 专题 | 物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文 |
| 推荐引用方式 GB/T 7714 | Jiang, D,Hu, T,You, LX,et al. High-T-c superconductivity in ultrathin Bi2Sr2CaCu2O8+x down to half-unit-cell thickness by protection with graphene[J]. NATURE COMMUNICATIONS,2014,5. |
| APA | Jiang, D.,Hu, T.,You, LX.,Li, Q.,Li, A.,...&Jiang, MH.(2014).High-T-c superconductivity in ultrathin Bi2Sr2CaCu2O8+x down to half-unit-cell thickness by protection with graphene.NATURE COMMUNICATIONS,5. |
| MLA | Jiang, D,et al."High-T-c superconductivity in ultrathin Bi2Sr2CaCu2O8+x down to half-unit-cell thickness by protection with graphene".NATURE COMMUNICATIONS 5(2014). |
入库方式： OAI收割
来源：物理研究所
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