超导电性
凝聚态物理
石墨烯
材料科学
兴奋剂
联轴节(管道)
声子
电荷(物理)
拉伤
拉伸应变
极限抗拉强度
费米面
纳米技术
复合材料
物理
量子力学
内科学
医学
作者
Si Chen,Zheng Liu,Wenhui Duan,Feng Liu
标识
DOI:10.1103/physrevlett.111.196802
摘要
Graphene has exhibited a wealth of fascinating properties, but is also known not to be a superconductor. Remarkably, we show that graphene can be made a conventional Bardeen-Cooper-Schrieffer superconductor by the combined effect of charge doping and tensile strain. While the effect of doping obviously enlarges the Fermi surface, the effect of strain profoundly increases the electron-phonon coupling. At the experimental accessible doping ($\ensuremath{\sim}4\ifmmode\times\else\texttimes\fi{}{10}^{14}\text{ }\text{ }{\mathrm{cm}}^{\ensuremath{-}2}$) and strain ($\ensuremath{\sim}16%$) levels, the superconducting critical temperature ${T}_{c}$ is estimated to be as high as $\ensuremath{\sim}30\text{ }\text{ }\mathrm{K}$, the highest for a single-element material above the liquid hydrogen temperature.
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