Shot noise in graphene with long-range Coulomb interaction and local Fermi distribution
Shot noise in graphene with long-range Coulomb interaction and local Fermi distribution
复制标题
石墨烯中具有长程库仑相互作用和局部费米分布的散粒噪声
DOI:
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发表时间:
2009
期刊:
影响因子:
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通讯作者:
B. Horovitz
中科院分区:
文献类型:
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作者:
A. Golub;B. Horovitz
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.