Dipartimento di Fisica, Università degli Studi della Calabria, I-87036 Rende (Cs), Italy.
J Phys Condens Matter. 2013 Aug 28;25(34):345303. doi: 10.1088/0953-8984/25/34/345303.
The electronic response of quasi-freestanding graphene on Pt(111) has been measured by high-resolution electron energy loss spectroscopy. Loss spectra reveal the existence of three distinct excitations: a dispersing feature due to the ordinary sheet plasmon and two dispersionless modes at 0.2 and 0.5–0.6 eV. The latter two features are assigned to the coupled plasmon–phonon excitation and to an interface plasmon, respectively. The complex interactions of plasmons with other particles have significant fundamental and practical implications on the electronic response of graphene and their knowledge is essential for tailoring upcoming graphene-based plasmonic devices.
通过高分辨率电子能量损失谱测量了准自由-standing 石墨烯在 Pt(111)上的电子响应。损失谱揭示了三种不同激发的存在：由于普通片体等离子体引起的色散特征，以及在 0.2 和 0.5-0.6 eV 处的两个无弥散模式。后两个特征分别归因于耦合等离子体-声子激发和界面等离子体。等离子体与其他粒子的复杂相互作用对石墨烯的电子响应具有重要的基础和实际意义，它们的知识对于定制即将到来的基于石墨烯的等离子体器件至关重要。
