Chiral plasmon in gapped Dirac systems

Anshuman Kumar, Andrei Nemilentsau, Kin Hung Fung, George Hanson, Nicholas X. Fang, Tony Low

Research output: Contribution to journalArticle

37 Scopus citations

Abstract

We study the electromagnetic response and surface electromagnetic modes in a generic gapped Dirac material under pumping with circularly polarized light. The valley imbalance due to pumping leads to a net Berry curvature, giving rise to a finite transverse conductivity. We discuss the appearance of nonreciprocal chiral edge modes, their hybridization and waveguiding in a nanoribbon geometry, and giant polarization rotation in nanoribbon arrays.

Original languageEnglish (US)
Article number041413
JournalPhysical Review B
Volume93
Issue number4
DOIs
StatePublished - Jan 19 2016

How much support was provided by MRSEC?

  • Partial

Reporting period for MRSEC

  • Period 3

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  • Projects

    MRSEC SEED Projects

    11/1/14 → …

    Project: Research project

    University of Minnesota MRSEC (DMR-1420013)

    Lodge, T. P.

    11/1/1410/31/20

    Project: Research project

    Cite this

    Kumar, A., Nemilentsau, A., Fung, K. H., Hanson, G., Fang, N. X., & Low, T. (2016). Chiral plasmon in gapped Dirac systems. Physical Review B, 93(4), [041413]. https://doi.org/10.1103/PhysRevB.93.041413