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Plasmonics in Dirac systems: from graphene to topological insulators
Summary
This review covers plasmonics in graphene and Dirac systems, detailing models for intrinsic plasmon excitation in various graphene structures. It also explores Dirac systems with spin-orbit coupling and topological insulators.
Area of Science:
- Condensed Matter Physics
- Materials Science
- Quantum Optics
Background:
- Plasmonics in graphene and Dirac systems is an emerging field with significant potential.
- Understanding plasmon excitation is crucial for developing novel electronic and photonic devices.
Purpose of the Study:
- To review recent developments in plasmonics for graphene and Dirac systems.
- To provide a comprehensive introduction to standard models and techniques in this field.
- To discuss plasmon excitation in various graphene configurations and related Dirac systems.
Main Methods:
- Hydrodynamic equations for intrinsic plasmon excitation.
- Random Phase Approximation (RPA) for plasmon analysis.
- Analysis of Dirac systems in the retardation limit and with spin-orbit coupling.
Main Results:
- Detailed discussion of intrinsic plasmon excitation in single, bilayer, double, and multilayer graphene.
- Exploration of plasmonics in Dirac systems including topological insulators.
- Summary of charge, current, and photon linear response functions.
Conclusions:
- The review provides a foundational understanding of plasmonics in graphene and Dirac systems.
- It highlights key theoretical models and their applications.
- It serves as a guide for future research in this rapidly advancing field.
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