石墨烯 p-n 结中 Klein 隧穿的证据
介观与纳米尺度物理
2009-01-18 v2
摘要
我们利用一组电容耦合到石墨烯以调制势景观的金属栅极，研究了通过石墨烯中势垒的输运过程。当栅极诱导的势阶足够陡峭时，无序变得不那么重要，跨越势阶的电阻与 Dirac 费米子 Klein 隧穿的预测在定量上相符，仅存在微小修正。我们还进行了低磁场下的磁阻测量，并将其与最近的预测进行了比较。
引用
@article{arxiv.0806.2319,
title = {Evidence of Klein tunneling in graphene p-n junctions},
author = {N. Stander and B. Huard and D. Goldhaber-Gordon},
journal= {arXiv preprint arXiv:0806.2319},
year = {2009}
}
备注
Major changes made: 1) Taking into account properly the contribution of the resistance of monopolar junctions to the odd part of the resistance. To better present the results we use a fitting parameter for the amplitude of screening in graphene. 2) Wrong data for the diffusive model in figures 3, 9 and 10 was plotted in former version. 3) Figure 5 moved to EPAPS