Investigation of energy transport velocity by leaky surface plasmon waves of graphene

Subject Areas : Journal of Nanoanalysis

vahideh mohadesi ^{1 *}

1 - Department of Physics, Central Tehran Branch, Islamic Azad University, Sarab, Iran

Received: 2024-09-16 Accepted : 2024-11-23 Published : 2024-05-31

Keywords: Energy velocity, Graphene, Leaky surface plasmon waves,

Abstract :

In graphene-based layered structures, the presence of inhomogeneous neighboring materials can significantly influence the propagation dynamics of surface plasmon waves. This interaction offers the potential to excite leaky surface plasmon waves in graphene. In this study, we investigate a configuration where a high refractive index medium is positioned near a graphene sheet, separated by a micrometer-scale gap. By systematically varying the gap thickness and tuning the Fermi level of graphene, we analyze the resulting changes in the dispersion characteristics and energy transport velocity of the leaky surface plasmon waves. Our results demonstrate that the leakage of surface plasmon waves into the high refractive index medium alters both the dispersion characteristics and energy transport velocity. The extent of these effects is dependent on the structural parameters of the system. Our findings shed light on the critical role of these parameters in optimizing plasmonic wave behavior, offering new avenues for advanced photonic and optoelectronic applications.

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