Effect of chemical potential on Dyakonov-Tamm waves guided by a graphene-coated structurally chiral medium

Francesco Chiadini, Antonio Scaglione, Vincenzo Fiumara, Mikhail V. Shuba, Akhlesh Lakhtakia

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

We numerically investigated the effect of chemical potential on Dyakonov-Tamm waves (DTWs) guided by a graphene-coated structurally chiral medium in the terahertz and the visible spectral regimes. Only one DTW can propagate in a specific direction in wide angular sectors, but multiple DTWs can propagate in a specific direction in narrow angular sectors, in both spectral regimes. Although the phase speed of a DTW depends weakly on the chemical potential in both spectral regimes, the propagation distance can be strongly dependent on the chemical potential in the terahertz regime but not in the visible regime. This difference can be attributed to the real part of the surface conductivity of graphene, which varies significantly with the chemical potential in the terahertz regime but not in the visible regime.

Original languageEnglish (US)
Article number055002
JournalJournal of Optics (United Kingdom)
Volume21
Issue number5
DOIs
StatePublished - Apr 12 2019

Fingerprint

Graphite
Guided electromagnetic wave propagation
Chemical potential
Graphene
graphene
sectors
conductivity
propagation
Direction compound

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics

Cite this

Chiadini, Francesco ; Scaglione, Antonio ; Fiumara, Vincenzo ; Shuba, Mikhail V. ; Lakhtakia, Akhlesh. / Effect of chemical potential on Dyakonov-Tamm waves guided by a graphene-coated structurally chiral medium. In: Journal of Optics (United Kingdom). 2019 ; Vol. 21, No. 5.
@article{e4d43ec545ea49e9b5888116a7b6103f,
title = "Effect of chemical potential on Dyakonov-Tamm waves guided by a graphene-coated structurally chiral medium",
abstract = "We numerically investigated the effect of chemical potential on Dyakonov-Tamm waves (DTWs) guided by a graphene-coated structurally chiral medium in the terahertz and the visible spectral regimes. Only one DTW can propagate in a specific direction in wide angular sectors, but multiple DTWs can propagate in a specific direction in narrow angular sectors, in both spectral regimes. Although the phase speed of a DTW depends weakly on the chemical potential in both spectral regimes, the propagation distance can be strongly dependent on the chemical potential in the terahertz regime but not in the visible regime. This difference can be attributed to the real part of the surface conductivity of graphene, which varies significantly with the chemical potential in the terahertz regime but not in the visible regime.",
author = "Francesco Chiadini and Antonio Scaglione and Vincenzo Fiumara and Shuba, {Mikhail V.} and Akhlesh Lakhtakia",
year = "2019",
month = "4",
day = "12",
doi = "10.1088/2040-8986/ab137f",
language = "English (US)",
volume = "21",
journal = "Journal of Optics",
issn = "2040-8978",
publisher = "IOP Publishing Ltd.",
number = "5",

}

Effect of chemical potential on Dyakonov-Tamm waves guided by a graphene-coated structurally chiral medium. / Chiadini, Francesco; Scaglione, Antonio; Fiumara, Vincenzo; Shuba, Mikhail V.; Lakhtakia, Akhlesh.

In: Journal of Optics (United Kingdom), Vol. 21, No. 5, 055002, 12.04.2019.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Effect of chemical potential on Dyakonov-Tamm waves guided by a graphene-coated structurally chiral medium

AU - Chiadini, Francesco

AU - Scaglione, Antonio

AU - Fiumara, Vincenzo

AU - Shuba, Mikhail V.

AU - Lakhtakia, Akhlesh

PY - 2019/4/12

Y1 - 2019/4/12

N2 - We numerically investigated the effect of chemical potential on Dyakonov-Tamm waves (DTWs) guided by a graphene-coated structurally chiral medium in the terahertz and the visible spectral regimes. Only one DTW can propagate in a specific direction in wide angular sectors, but multiple DTWs can propagate in a specific direction in narrow angular sectors, in both spectral regimes. Although the phase speed of a DTW depends weakly on the chemical potential in both spectral regimes, the propagation distance can be strongly dependent on the chemical potential in the terahertz regime but not in the visible regime. This difference can be attributed to the real part of the surface conductivity of graphene, which varies significantly with the chemical potential in the terahertz regime but not in the visible regime.

AB - We numerically investigated the effect of chemical potential on Dyakonov-Tamm waves (DTWs) guided by a graphene-coated structurally chiral medium in the terahertz and the visible spectral regimes. Only one DTW can propagate in a specific direction in wide angular sectors, but multiple DTWs can propagate in a specific direction in narrow angular sectors, in both spectral regimes. Although the phase speed of a DTW depends weakly on the chemical potential in both spectral regimes, the propagation distance can be strongly dependent on the chemical potential in the terahertz regime but not in the visible regime. This difference can be attributed to the real part of the surface conductivity of graphene, which varies significantly with the chemical potential in the terahertz regime but not in the visible regime.

UR - http://www.scopus.com/inward/record.url?scp=85067792653&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85067792653&partnerID=8YFLogxK

U2 - 10.1088/2040-8986/ab137f

DO - 10.1088/2040-8986/ab137f

M3 - Article

AN - SCOPUS:85067792653

VL - 21

JO - Journal of Optics

JF - Journal of Optics

SN - 2040-8978

IS - 5

M1 - 055002

ER -