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Photoexcitation Cascade and Quantum-Relativistic Jets in Graphene

By Cyprian Lewandowski and L. Levitov
In Dirac materials linear band dispersion blocks momentum-conserving interband transitions, creating a bottleneck for electron-hole pair production and carrier multiplication in the photoexcitation cascade. Here we show that the decays are unblocked and the bottleneck is relieved by subtle many-body effects involving multiple off-shell e-h pairs. The decays result from... Show more
February 11, 2018
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Photoexcitation Cascade and Quantum-Relativistic Jets in Graphene
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