Radiative decay effects influence the local electromagnetic response of the monolayer graphene with surface corrugations in terahertz range

• Published in: arXiv.org
• Main Authors: Firsov, Yu A, Firsova, N E
• Format: Paper Journal Article
• Language: English
• Published: Ithaca Cornell University Library, arXiv.org 15.10.2014
• Subjects: Current carriers; Curvature; Decay; Electric fields; Graphene; Local current; Mechanical properties; Monolayers; Physics - Mesoscale and Nanoscale Physics
• ISSN: 2331-8422
• DOI: 10.48550/arxiv.1410.4033

We continue the study of surface corrugations influence on the monolayer graphene local electromagnetic response in terahertz range we started earlier. The effects of radiative decay, double-valley structure of charge carriers spectrum in graphene and the breathing surface curvature form induced synthetic electric fields are taken into account. To fulfill this program the generalized nonlinear self-consistent equation is obtained. In case of weak external alternating electric field for the obtained equation in linear approximation on the external electric field the exact solution is found. It shows that in this case we get local dephasing in induced current paths depending on the surface form . This theoretical result qualitatively explains the corresponding experiments with local current patterns in graphene without using fully quantum approach which is necessary for theoretical description of such phenomenon in graphene nanoribbons. Besides the formulae obtained in the present paper could become the basis of the new method of the imaging of surface corrugations form for given picture of local current paths. The obtained results allow to study mechanical behavior of materials at nanoscale deviates from macroscoping established concepts and this is of particular importance for graphene.