论文标题
具有无尺度相关屏障空间的无序石墨烯超晶格的电子传输
Electronic transport in disordered graphene superlattices with scale-free correlated barrier spacements
论文作者
论文摘要
转移矩阵方法用于研究具有远距离相关屏障空间的石墨烯超晶格中的电子传输。通过将低能电子激发视为无质量的零dirac费物，我们通过石墨烯超级晶格的传输光谱进行计算，其潜在屏障具有随机分布的远距离相关性，由幂律光谱密度$ s（k）\ propto propto 1/k^α$。我们表明，在很大的入射角上，疾病分布的相关性在电子传输中没有重要作用。但是，随着正常发病率的接近，远程相关性抑制了安德森定位，并且一种传输模式设置了让人联想到klein隧道。
A transfer matrix approach is used to study the electronic transport in graphene superlattices with long-range correlated barrier spacements. By considering the low-energy electronic excitations as massless Dirac fermions, we compute by transmission spectra of graphene superlattices with potential barriers having spacements randomly distributed with long-range correlations governed by a power-law spectral density $S(k)\propto 1/k^α$. We show that at large incidence angles, the correlations in the disorder distribution do not play a significant role in the electronic transmission. However, long-range correlations suppress the Anderson localization as normal incidence is approached and a band of transmitting modes sets up reminiscent of Klein tunneling.
