双层石墨烯/六方氮化硼超晶格超导电性的观察
Observation of superconductivity in bilayer graphene/hexagonal boron nitride superlattices
摘要：
一类低维超导（SC），如大多数“原子层”SC，仅在某些情况下存活，这意味着衬底的作用。此外，在最近发现的一些SC在非均质界面，SC被埋在散装固体和异位。真正的原子层SC很难访问。在这里，我们报告了一种新的途径，原子层SC在石墨烯超晶格。我们的器件包括堆叠的非扭曲双层石墨烯（BLG）和六方氮化硼（hBN），即，hBN/BLG/hBN莫尔超晶格。在原位静电掺杂，我们观察到一个SC圆顶的临界温度高达$T_{\rm{BKT}} = 14 \rm{K}$，对应于限制的旋涡。我们相信，SC通过掺杂狄拉克材料是无处不在的凝聚态物质，这项研究铺平了道路，设计一个新的SC家庭。
英文摘要：
A class of low-dimensional superconductivity (SC), such as most of "atomic-layer" SCs, has survived only under certain circumstances, implying a role of the substrate. Moreover, in some recent SC discoveries at heterogeneous interfaces, SC was buried in bulk solids and ex situ. Genuine atomic-layer SC is difficult to access. Here we report a novel route to atomic-layer SC in graphene superlattices. Our device comprises stacked non-twisted bilayer graphene (BLG) and hexagonal boron nitride (hBN), i.e., hBN/BLG/hBN Moiré superlattices. Upon in situ electrostatic doping, we observe an SC dome with a critical temperature up to $T_{\rm{BKT}} = 14 \rm{K}$, corresponding to the confinement of vortices. We believe that SC via doping Dirac materials is ubiquitous in condensed matter and that this study paves a way toward the design of a new SC family.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
