AI Article Synopsis
- Nontrivial topology in materials can lead to stable surface states, and this study focuses on gaseous plasmon polaritons (GPP), which are waves at the boundary of magnetized plasma and vacuum.
- The research reveals that GPPs originate from the topological properties of magnetized plasma, even though a gaseous plasma doesn't have a sharp interface due to gradual density changes.
- The findings suggest that GPPs can exist within certain energy gaps, indicating that current lab setups are viable for exploring topological wave physics in plasmas.
Article Abstract
Nontrivial topology in bulk matter has been linked with the existence of topologically protected interfacial states. We show that a gaseous plasmon polariton (GPP), an electromagnetic surface wave existing at the boundary of magnetized plasma and vacuum, has a topological origin that arises from the nontrivial topology of magnetized plasma. Because a gaseous plasma cannot sustain a sharp interface with discontinuous density, one must consider a gradual density falloff with scale length comparable to or longer than the wavelength of the wave. We show that the GPP may be found within a gapped spectrum in present-day laboratory devices, suggesting that platforms are currently available for experimental investigation of topological wave physics in plasmas.
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| http://dx.doi.org/10.1103/PhysRevLett.124.195001 | DOI Listing |
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