期刊论文详细信息
Shot noise in graphene with long-range Coulomb interaction and local Fermi distribution | |
Article | |
关键词: QUANTUM; CONDUCTIVITY; SCATTERING; MODEL; | |
DOI : 10.1103/PhysRevB.81.245424 | |
来源: SCIE |
【 摘 要 】
We calculate the shot-noise power in ballistic graphene using the kinetic equation approach based on the Keldysh technique. We find that the local energy distribution function obeys Poisson's equation, indicating a mapping into a diffusive metal system. We derive the conductance and noise including the long-range Coulomb interaction to first order. We find that the shot noise increases due to interaction, leading to a frequency dependence. Furthermore, we find that the Fano factor at degeneracy is 1/3, the same as without the Coulomb interaction.
【 授权许可】
Free