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Browsing by Author "Tseng, P. S."

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    Dirac fermion relaxation and energy loss rate near the Fermi surface in monolayer and multilayer graphene
    (2014-08-07)
    Luo, C. W.
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    Tseng, P. S.
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    Chen, H. -J.
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    Wu, K. H.
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    Li, L. J.
    Ultrafast dynamics of Dirac fermions near the Fermi surface in monolayer and multilayer graphene are revealed using optical pump mid-infrared probe spectroscopy. The energy loss rate of Dirac fermions is also determined via energy-resolved transient transmissivity spectra, which is significantly suppressed as the number of layers in graphene increases.