Chiral plasmon in gapped Dirac systems

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

doi:10.1103/PhysRevB.93.041413

Chiral plasmon in gapped Dirac systems

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

Research output: Journal article publication › Journal article › Academic research › peer-review

77 Citations (Scopus)

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 language	English
Article number	041413
Journal	Physical Review B
Volume	93
Issue number	4
DOIs	https://doi.org/10.1103/PhysRevB.93.041413
Publication status	Published - 19 Jan 2016

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

More information

10.1103/PhysRevB.93.041413

http://hdl.handle.net/10397/43979

Cite this

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title = "Chiral plasmon in gapped Dirac systems",

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.",

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AU - Kumar, Anshuman

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AU - Fung, Kin Hung

AU - Hanson, George

AU - Fang, Nicholas X.

AU - Low, Tony

PY - 2016/1/19

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N2 - 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.

AB - 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.

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U2 - 10.1103/PhysRevB.93.041413

DO - 10.1103/PhysRevB.93.041413

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VL - 93

JO - Physical Review B

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Chiral plasmon in gapped Dirac systems

Abstract

ASJC Scopus subject areas

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