Work

Temporal Effects of Surface Plasmon Polaritons in a Quantum Plasma Slab

Year: 2026

Type: article

Abstract: The temporal effects associated with surface plasmon polaritons (SPP) in a slab of conductive quantum material (metal, graphene, or semiconductor) are described as a quantum plasma. Exchange potentials associated with quantum degeneracy are included. We derive a new dispersion relation of SPP modes in a quantum plasma slab with finite size, which reduces to the previously known cases of a single plasma boundary and of a two-dimensional slab in the appropriate limits. A new SPP instability regime due to exchange quantum effects is demonstrated. The phenomenology of time refraction and time reflection is extended to SPP, and the frequency shifts and amplitude transformations due to a time boundary are derived. Finite time boundary effects and arbitrary temporal changes of the medium are also considered.

Source: Entropy

DOI: 10.3390/e28050496

Authors: José Tito Mendonça, José Luis Figueiredo, Hugo Terças

Institutions: University of Lisbon, Instituto Superior Técnico, Instituto de Plasmas e Fusão Nuclear, Universidade Politécnica de Lisboa

Language: English

Topic: Plasmonic and Surface Plasmon Research

Subfield: Biomedical Engineering

Field: Engineering

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $3,137

Funder: Fundação para a Ciência e a Tecnologia