Plasmon Generation Mechanism (IMAGE)

Moscow Institute of Physics and Technology

Plasmon Generation Mechanism

Caption

Band diagram of the graphene -- tungsten disulphide -- graphene structure explaining the principle of plasmon generation. The application of interlayer voltage V results in the enrichment of one layer by electrons (blue), and the emergence of free states (called holes) in the opposite layer (red). An electron can tunnel from an occupied state to an empty state (dashed line), and its excess energy can be spent to excite a plasmon (red wavy line).

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© MIPT

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