Revivals, classical periodicity, and zitterbewegung of electron currents in monolayer graphene

Article

关键词: FRACTIONAL REVIVALS;    WAVE-PACKETS;    CONDUCTIVITY;    COLLAPSE;   

DOI  :  10.1103/PhysRevB.80.165416

来源: SCIE

【 摘 要 】

Revivals of electric current in graphene in the presence of an external magnetic field are described. It is shown that when the electrons are prepared in the form of wave packets assuming a Gaussian population of only positive (or negative) energy Landau levels, the presence of the magnetic field induce revivals of the electron currents, besides the classical cyclotron motion. When the population comprises both positive and negative energy Landau levels, revivals of the electric current manifest simultaneously with zitterbewegung and the classical cyclotron motion. We relate the temporal scales of these three effects and discuss to what extent these results hold for real graphene samples.

【 授权许可】

Free