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Abstract: Revivals of electric current in graphene in the presence of an externalmagnetic field are described. It is shown that when the electrons are preparedin the form of wave packets assuming a Gaussian population of only positive ornegative energy Landau levels, the presence of the magnetic field inducerevivals of the electron currents, besides the classical cyclotron motion. Whenthe population comprises both positive and negative energy Landau levels,revivals of the electric current manifest simultaneously with zitterbewegungand the classical cyclotron motion. We relate the temporal scales of thesethree effects and discuss to what extent these results hold for real graphenesamples.



Autor: Elvira Romera, Francisco de los Santos

Fuente: https://arxiv.org/



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