Luo C W, Tseng P S, Chen H-J, Wu K H, Li L J
Department of Electrophysics, National Chiao Tung University, Hsinchu 30010, Taiwan.
Nanoscale. 2014 Aug 7;6(15):8575-8. doi: 10.1039/c4nr02205j.
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.
利用光泵浦-中红外探测光谱揭示了单层和多层石墨烯中费米表面附近狄拉克费米子的超快动力学。狄拉克费米子的能量损失率也通过能量分辨瞬态透射光谱来确定，随着石墨烯层数的增加，该能量损失率被显著抑制。
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