论文标题
石墨烯中的双极电子波导
Bipolar electron waveguides in graphene
论文作者
论文摘要
我们分析地表明，狄拉克材料在屏障和井中将电子定位的能力可用于在石墨烯光谱中打开伪空隙。通过使用狭窄的顶门作为指导电位，我们证明了石墨烯双极波导可以沿电子波导创建非统一的一维散布，其静电可控的伪带隙与狭窄频率的强terahertz过渡有关。
We show analytically that the ability of Dirac materials to localize an electron in both a barrier and a well can be utilized to open a pseudo-gap in graphene's spectrum. By using narrow top-gates as guiding potentials, we demonstrate that graphene bipolar waveguides can create a non-monotonous one-dimensional dispersion along the electron waveguide, whose electrostatically controllable pseudo-band-gap is associated with strong terahertz transitions in a narrow frequency range.
