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Updated: Jun 5, 2026
08:01
Spectral and Angle-Resolved Magneto-Optical Characterization of Photonic Nanostructures
Published on: November 21, 2019
Dirac dynamics in one-dimensional graphene-like plasmonic crystals: pseudo-spin, chirality, and diffraction anomaly
Sung Hyun Nam1, Jiangfeng Zhou, Antoinette J Taylor
1Center for Integrated Nanotechnologies, Materials Physics & Applications Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA. sunghnam@gmail.com
Optics Express
|December 18, 2010
Summary
Researchers developed new plasmonic crystals with graphene-like symmetry. These crystals exhibit unique surface plasmon polariton behavior, splitting into two beams due to pseudo-spin, similar to the spin Hall effect.
Area of Science:
- Condensed matter physics
- Photonics
- Materials science
Background:
- Surface plasmon polaritons (SPPs) are crucial for nanoscale optical phenomena.
- Graphene's unique electronic properties stem from its Dirac-like band structure.
- Plasmonic crystals offer tunable optical responses.
Purpose of the Study:
- To introduce a novel class of plasmonic crystals with graphene-like symmetries.
- To investigate the dynamics of SPPs within these engineered crystals.
- To explore the potential for analogous quantum phenomena in plasmonics.
Main Methods:
- Theoretical study employing the formalism of Dirac dynamics.
- Analysis of k-space spectrum to identify Dirac-type features.
- Introduction of pseudo-spin and chirality concepts for symmetry analysis.
Main Results:
- Demonstration of plasmonic crystals with graphene-like internal symmetries and Dirac-type spectrum.
- Observation of SPP dynamics analogous to relativistic quantum particles.
- Identification of pseudo-spin and chirality linked to crystal symmetry near the Dirac point.
- Experimental observation of SPP beam splitting based on pseudo-spin states, akin to the spin Hall effect.
Conclusions:
- The developed plasmonic crystals exhibit unique Dirac-like properties.
- The pseudo-spin concept effectively describes SPP behavior in these crystals.
- This work opens avenues for novel photonic devices mimicking quantum phenomena.
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