Scattering by an adsorbed chain on metallic hexagonal surface

M. Boucherrab, R. Tigrine, B. Bourahla, A. Khater

Research output: Contribution to journalArticle

Abstract

We develop a theoretical approach to calculate the scattering and localization properties in the inhomogeneous hexagonal nanostructure system with adsorbed chain. Our numerical results are presented for three different positions of the defect, Top, Hollow and Bridge. The breakdown of translation symmetry induced by the inhomogeneity, gives rise to localized elastic wave modes at its neighborhood. The Landauer and Buttiker method is used to analyze the elastic wave scattering phenomena for atomic sites that constitute a minimum representation set in the neighborhood of the defect. The transmission and reflection probabilities as well as the phonons average transmittance across and the vibration density of states are determined for a large band of incident scattering energies. The coherent coupling between the localized elastic wave and the propagating modes of the perfect hexagonal structure leads to Fano resonances in the phononic conductance spectra of the studied structure. This is directly related to the measurable physical thermal conductivity of the perturbed domain.

Original languageEnglish
Article number1350199
JournalInternational Journal of Modern Physics B
Volume28
Issue number1
DOIs
Publication statusPublished - 10 Jan 2014
Externally publishedYes

Fingerprint

elastic waves
scattering
defects
wave scattering
hollow
transmittance
elastic scattering
inhomogeneity
phonons
thermal conductivity
breakdown
vibration
symmetry
energy

Keywords

  • green functions
  • Landauer and Buttiker formalism
  • low dimensional system
  • matching method
  • nanostructures
  • Scattering properties

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Statistical and Nonlinear Physics

Cite this

Scattering by an adsorbed chain on metallic hexagonal surface. / Boucherrab, M.; Tigrine, R.; Bourahla, B.; Khater, A.

In: International Journal of Modern Physics B, Vol. 28, No. 1, 1350199, 10.01.2014.

Research output: Contribution to journalArticle

Boucherrab, M. ; Tigrine, R. ; Bourahla, B. ; Khater, A. / Scattering by an adsorbed chain on metallic hexagonal surface. In: International Journal of Modern Physics B. 2014 ; Vol. 28, No. 1.
@article{45ee5c072c7542a8a3c0084bec40feaa,
title = "Scattering by an adsorbed chain on metallic hexagonal surface",
abstract = "We develop a theoretical approach to calculate the scattering and localization properties in the inhomogeneous hexagonal nanostructure system with adsorbed chain. Our numerical results are presented for three different positions of the defect, Top, Hollow and Bridge. The breakdown of translation symmetry induced by the inhomogeneity, gives rise to localized elastic wave modes at its neighborhood. The Landauer and Buttiker method is used to analyze the elastic wave scattering phenomena for atomic sites that constitute a minimum representation set in the neighborhood of the defect. The transmission and reflection probabilities as well as the phonons average transmittance across and the vibration density of states are determined for a large band of incident scattering energies. The coherent coupling between the localized elastic wave and the propagating modes of the perfect hexagonal structure leads to Fano resonances in the phononic conductance spectra of the studied structure. This is directly related to the measurable physical thermal conductivity of the perturbed domain.",
keywords = "green functions, Landauer and Buttiker formalism, low dimensional system, matching method, nanostructures, Scattering properties",
author = "M. Boucherrab and R. Tigrine and B. Bourahla and A. Khater",
year = "2014",
month = "1",
day = "10",
doi = "10.1142/S0217979213501993",
language = "English",
volume = "28",
journal = "International Journal of Modern Physics B",
issn = "0217-9792",
publisher = "World Scientific Publishing Co. Pte Ltd",
number = "1",

}

TY - JOUR

T1 - Scattering by an adsorbed chain on metallic hexagonal surface

AU - Boucherrab, M.

AU - Tigrine, R.

AU - Bourahla, B.

AU - Khater, A.

PY - 2014/1/10

Y1 - 2014/1/10

N2 - We develop a theoretical approach to calculate the scattering and localization properties in the inhomogeneous hexagonal nanostructure system with adsorbed chain. Our numerical results are presented for three different positions of the defect, Top, Hollow and Bridge. The breakdown of translation symmetry induced by the inhomogeneity, gives rise to localized elastic wave modes at its neighborhood. The Landauer and Buttiker method is used to analyze the elastic wave scattering phenomena for atomic sites that constitute a minimum representation set in the neighborhood of the defect. The transmission and reflection probabilities as well as the phonons average transmittance across and the vibration density of states are determined for a large band of incident scattering energies. The coherent coupling between the localized elastic wave and the propagating modes of the perfect hexagonal structure leads to Fano resonances in the phononic conductance spectra of the studied structure. This is directly related to the measurable physical thermal conductivity of the perturbed domain.

AB - We develop a theoretical approach to calculate the scattering and localization properties in the inhomogeneous hexagonal nanostructure system with adsorbed chain. Our numerical results are presented for three different positions of the defect, Top, Hollow and Bridge. The breakdown of translation symmetry induced by the inhomogeneity, gives rise to localized elastic wave modes at its neighborhood. The Landauer and Buttiker method is used to analyze the elastic wave scattering phenomena for atomic sites that constitute a minimum representation set in the neighborhood of the defect. The transmission and reflection probabilities as well as the phonons average transmittance across and the vibration density of states are determined for a large band of incident scattering energies. The coherent coupling between the localized elastic wave and the propagating modes of the perfect hexagonal structure leads to Fano resonances in the phononic conductance spectra of the studied structure. This is directly related to the measurable physical thermal conductivity of the perturbed domain.

KW - green functions

KW - Landauer and Buttiker formalism

KW - low dimensional system

KW - matching method

KW - nanostructures

KW - Scattering properties

UR - http://www.scopus.com/inward/record.url?scp=84890561934&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84890561934&partnerID=8YFLogxK

U2 - 10.1142/S0217979213501993

DO - 10.1142/S0217979213501993

M3 - Article

AN - SCOPUS:84890561934

VL - 28

JO - International Journal of Modern Physics B

JF - International Journal of Modern Physics B

SN - 0217-9792

IS - 1

M1 - 1350199

ER -