Quasiclassical nonlinear plasmon resonance in graphene

Scientific paper - Original scientific paper

• Author: Marinko Jablan; MBZ: 297366
• Author's institution: University of Zagreb; Faculty of Science; (Department of Physics)
• Scientific / art field, discipline and subdiscipline: NATURAL SCIENCES; Physics

Abstract (english)

Electrons in graphene behave like relativistic Dirac particles which can reduce the velocity of light by two orders of magnitude in the form of plasmon-polaritons. Here we show how these properties lead to a peculiar nonlinear plasmon response in the quasiclassical regime of terahertz frequencies. On the one hand, we show how interband plasmon damping is suppressed by the relativistic Klein tunneling effect. On the other hand, we demonstrate huge enhancement of the nonlinear intraband response when the plasmon velocity approaches the resonance with the electron Fermi velocity. This extreme sensitivity to the plasmon intensity could be used for new terahertz technologies.

• Keywords (english): Nonlinear optics; Dirac fermions; plasmonics
• Language: english
• Publication type: Scientific paper - Original scientific paper
• Publication status: Published
• Peer review: Peer review - international
• Publication version: Published version
• Journal title: Physical Review B
• Numbering: vol. 101, no. 8, 085424
• p-ISSN: 2469-9950
• e-ISSN: 2469-9969
• DOI: https://doi.org/10.1103/physrevb.101.085424
• URN:NBN: urn:nbn:hr:217:509816
• Publication: 2020
• Project: Number: KK.01.1.1.01.0004; Title (croatian): Provedba vrhunskih istraživanja u sklopu Znanstvenog centra izvrsnosti za kvantne i kompleksne sustave te reprezentacije Liejevih algebri; Acronym: ZCI QuantiXLie; Leader: Hrvoje Buljan; Jurisdiction: Croatia; Funding stream: ZC
• Document URL: https://journals.aps.org/prb/abstract/10.1103/PhysRevB.101.085424
• Type of resource: Text
• Access conditions: Open access
• Public note: © 2020 American Physical Society. Received 28 October 2019; revised manuscript received 6 February 2020; accepted 11 February 2020; published 27 February 2020.
• Created on: 2020-09-19 20:47:33