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Title: Unconventional plasmon-phonon coupling in graphene

Journal Article · · Physical Review. B, Condensed Matter and Materials Physics
 [1];  [2];  [1]
  1. Univ. of Zagreb, Zagreb (Croatia)
  2. Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)

We predict the existence of coupled plasmon-phonon excitations in graphene by using the self-consistent linear response formalism. The unique electron-phonon interaction in graphene leads to unconventional mixing of plasmon and optical phonon polarizations. Here, we find that longitudinal plasmons couple exclusively to transverse optical phonons, whereas graphene’s transverse plasmons couple only to longitudinal optical phonons. This coupling can serve as a magnifier for exploring the electron-phonon interaction in graphene, and it offers electronical control over phonon frequencies.

Research Organization:
Energy Frontier Research Centers (EFRC) (United States). Solid-State Solar-Thermal Energy Conversion Center (S3TEC); Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
SC0001299; FG02-09ER46577
OSTI ID:
1386849
Journal Information:
Physical Review. B, Condensed Matter and Materials Physics, Vol. 83, Issue 16; Related Information: S3TEC partners with Massachusetts Institute of Technology (lead); Boston College; Oak Ridge National Laboratory; Rensselaer Polytechnic Institute; ISSN 1098-0121
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 41 works
Citation information provided by
Web of Science

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Cited By (8)

Graphene-plasmon polaritons: From fundamental properties to potential applications journal February 2016
Spatial control of defect creation in graphene at the nanoscale journal January 2012
Photocurrent in graphene harnessed by tunable intrinsic plasmons journal June 2013
Damping pathways of mid-infrared plasmons in graphene nanostructures journal April 2013
Graphene Based Surface Plasmon Polariton Modulator Controlled by Ferroelectric Domains in Lithium Niobate journal December 2015
Phonon dynamics of graphene on metals journal February 2016
Graphene on Pt 3 Ni(1 1 1): a suitable platform for tunable charge doping, electron–phonon coupling and plasmonic excitations journal June 2017
Phonon-polaritonics: enabling powerful capabilities for infrared photonics journal October 2019

Figures / Tables (6)