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Tunable surface electromagnetic waves at a graphene-hypercrystal boundary under magnetic bias
1Biomedical Cybernetics Department, National Technical University of Ukraine "Igor Sikorsky Kyiv Polytechnic Institute", Kyiv, Ukraine. fedorin.illia@lll.kpi.ua.
Scientific Reports
|March 14, 2026
Summary
This study explores surface electromagnetic waves at a graphene-hypercrystal interface. Graphene and a magnetic field offer tunable control over wave properties in the terahertz and mid-infrared ranges.
Area of Science:
- Condensed Matter Physics
- Electromagnetism
- Materials Science
Background:
- Surface electromagnetic waves are crucial for manipulating light at interfaces.
- Graphene and metamaterials offer unique electromagnetic properties.
- Controlling these waves is key for advanced optical devices.
Purpose of the Study:
- To investigate transverse magnetic (TM) and transverse electric (TE) surface waves at a graphene-hypercrystal interface.
- To analyze the influence of an external static magnetic field on these waves.
- To explore the tunability of surface wave characteristics.
Main Methods:
- Analytical derivation of dispersion relations using Maxwell's equations.
- Modeling graphene optical conductivity using the Kubo formula (Drude limit).
- Utilizing the effective medium approximation for the ferrite-semiconductor metamaterial.
Main Results:
- Distinct roles of graphene in TM and TE wave polarizations were identified.
- Graphene conductivity significantly impacts wave dispersion.
- The combined system allows flexible control over wave existence, dispersion, and localization.
Conclusions:
- Graphene-hypercrystal interfaces provide a tunable platform for controlling surface electromagnetic modes.
- Potential applications exist in the terahertz and mid-infrared frequency ranges.
- The study demonstrates significant control over wave properties through material and field engineering.
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