Please use this identifier to cite or link to this item: http://dspace.onu.edu.ua:8080/handle/123456789/11061
Title: Bending sound in graphene: Origin and manifestation
Authors: Adamyan, Vadym M.
Bondarev, Viktor N.
Zavalniuk, V. V.
Адамян, Вадим Мовсесович
Citation: Physics Letters A
Issue Date: 11-Nov-2016
Keywords: Graphene
Elastic theory
Bending sound
Fluctuations
Microscopic corrugations
Series/Report no.: ;Vol. 380, Issue 44
Abstract: It is proved that the acoustic-type dispersion of bending mode in graphene is generated by the fluctuation interaction between in-plane and out-of-plane terms in the free energy arising with account of non-linear components in the graphene strain tensor. In doing so we use an original adiabatic approximation based on the alleged (confirmed a posteriori) significant difference of sound speeds for in-plane and bending modes. The explicit expression for the bending sound speed depending only on the graphene mass density, in-plane elastic constants and temperature is deduced as well as the characteristics of the microscopic corrugations of graphene. The obtained results are in good quantitative agreement with the data of real experiments and computer simulations.
URI: http://dspace.onu.edu.ua:8080/handle/123456789/11061
Appears in Collections:Статті та доповіді ФМФІТ

Files in This Item:
File Description SizeFormat 
3732-3737.pdf411.26 kBAdobe PDFThumbnail
View/Open


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.