Dirac Spectra and Edge States in Honeycomb Plasmonic Lattices - Condensed Matter > Materials ScienceReport as inadecuate




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Abstract: We study theoretically the dispersion of plasmonic honeycomb lattices andfind Dirac spectra for both dipole and quadrupole modes. Zigzag edge statesderived from Dirac points are found in ribbons of these honeycomb plasmoniclattices. The zigzag edge states for out-of-plane dipole modes are closelyanalogous to the electronic ones in graphene nanoribbons. The edge states forin-plane dipole modes and quadrupole modes, however, have rather uniquecharacters due to the vector nature of the plasmonic excitations. Theconditions for the existence of plasmonic edge states are derived analytically.



Author: Dezhuan Han, Yun Lai, Jian Zi, Zhao-Qing Zhang, C. T. Chan

Source: https://arxiv.org/



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