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Impact of higher-order coherences on the carrier dynamics in Landau-quantized graphene

机译:Landau量化石墨烯中高阶相干性对载流子动力学的影响

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We investigate the carrier dynamics in Landau-quantized graphene within the density matrix formalism. In particular, we focus on the carrier-light interaction addressing the impact of higher-order polarizations beyond the optical selection rules. We find that these terms are in general negligible, however, there are regimes, where they even become crucial for the carrier dynamics. Our calculations show that for short excitation pulses, very small Landau level broadenings, and certain configurations of magnetic field strength, Fermi energy, and excitation energy, higher-order polarizations need to be taken into account.
机译:我们研究了Landau量化的石墨烯在密度矩阵形式上的载流子动力学。特别地,我们专注于解决光选择规则之外的高阶偏振的影响的载光相互作用。我们发现这些术语通常可以忽略不计,但是,在某些制度中,它们甚至对于航母动力而言至关重要。我们的计算表明,对于短激发脉冲,非常小的Landau能级展宽以及磁场强度,费米能和激发能的某些配置,需要考虑更高阶的极化。

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