掺杂石墨烷：一种原型的高温电子-声子超导体
Doped graphane: a prototype high-Tc electron-phonon superconductor
摘要：
我们通过第一性原理计算表明，p掺杂石墨烷是一种传统的超导体，其临界温度（Tc）高于液氮的沸点。碳原子间化学键的独特强度和由降维引起的费米能处的大电子态密度协同地将Tc推到90 K以上，并在光学声子色散中引起大的Kohn异常。由于最近报道了石墨烷的证据，并且相关材料如石墨烯、金刚石和碳纳米结构的掺杂已经很好地建立，超导石墨烷可能是可行的。
英文摘要：
We show by first-principles calculations that p-doped graphane is a conventional superconductor with a critical temperature (Tc) above the boiling point of liquid nitrogen. The unique strength of the chemical bonds between carbon atoms and the large density of electronic states at the Fermi energy arising from the reduced dimensionality synergetically push Tc above 90K, and give rise to large Kohn anomalies in the optical phonon dispersions. As evidence of graphane was recently reported, and doping of related materials such as graphene, diamond and carbon nanostructures is well established, superconducting graphane may be feasible.
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