Density-functional theory of graphene predicts that noble-metal contacts will provide doping but leave the Dirac crossing point intact. We use high-resolution angle-resolved photoemission and noble-metal intercalation to show that, instead, substantial band gaps open in proportion to the doping effect. Graphene on Au, however, remains gapless even during heavy electron doping by adsorbed Gd. A key role is assigned to quantum interference at the almost incommensurate graphene/Au interface.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据