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<p>This study investigates how hydrodynamic nonlocality influences electromagnetic wave propagation in magnetoplasmas. The bulk-mode dispersion relation is first derived to quantify the impact of nonlocality on the band structure, including dispersion bands and band gaps. With the Chern numbers of the relevant band gaps in mind, the analysis then focuses on identifying the associated edge modes, their dispersion and unidirectionality. To this end, additional boundary conditions induced by nonlocality at plasma interfaces are formulated and used to derive dispersion relations for surface waves at boundaries with dielectrics and unbiased plasmas. The theoretical and numerical results presented in this work may enlighten future developments in plasma-based topological photonic and plasmonic platforms.</p>

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Bulk Band Structure and Surface-Wave Dispersion in Hydrodynamically Nonlocal Magnetized Plasmas

  • 期刊论文

  • 发表日期：

    2026年6月3日

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  • Mohammad Amrollahzadeh,
  • Alireza Yahaghi

摘要

This study investigates how hydrodynamic nonlocality influences electromagnetic wave propagation in magnetoplasmas. The bulk-mode dispersion relation is first derived to quantify the impact of nonlocality on the band structure, including dispersion bands and band gaps. With the Chern numbers of the relevant band gaps in mind, the analysis then focuses on identifying the associated edge modes, their dispersion and unidirectionality. To this end, additional boundary conditions induced by nonlocality at plasma interfaces are formulated and used to derive dispersion relations for surface waves at boundaries with dielectrics and unbiased plasmas. The theoretical and numerical results presented in this work may enlighten future developments in plasma-based topological photonic and plasmonic platforms.