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Analytical modeling of electron energy loss spectroscopy of graphene: Ab initio study versus extended hydrodynamic model
dc.creator | Đorđević, Tijana | |
dc.creator | Radović, Ivan | |
dc.creator | Despoja, Vito | |
dc.creator | Lyon, Keenan | |
dc.creator | Borka, Duško | |
dc.creator | Mišković, Zoran L. | |
dc.date.accessioned | 2018-03-01T17:59:55Z | |
dc.date.available | 2018-03-01T17:59:55Z | |
dc.date.issued | 2018 | |
dc.identifier.issn | 0304-3991 | |
dc.identifier.issn | 1879-2723 | |
dc.identifier.uri | https://vinar.vin.bg.ac.rs/handle/123456789/1831 | |
dc.description.abstract | We present an analytical modeling of the electron energy loss (EEL) spectroscopy data for free-standing graphene obtained by scanning transmission electron microscope. The probability density for energy loss of fast electrons traversing graphene under normal incidence is evaluated using an optical approximation based on the conductivity of graphene given in the local, i.e., frequency-dependent form derived by both a two-dimensional, two-fluid extended hydrodynamic (eHD) model and an ab initio method. We compare the results for the real and imaginary parts of the optical conductivity in graphene obtained by these two methods. The calculated probability density is directly compared with the EEL spectra from three independent experiments and we find very good agreement, especially in the case of the eHD model. Furthermore, we point out that the subtraction of the zero-loss peak from the experimental EEL spectra has a strong influence on the analytical model for the EEL spectroscopy data. (C) 2017 Elsevier B.V. All rights reserved. | en |
dc.relation | info:eu-repo/grantAgreement/MESTD/Integrated and Interdisciplinary Research (IIR or III)/45005/RS// | |
dc.relation | info:eu-repo/grantAgreement/MESTD/Basic Research (BR or ON)/171023/RS// | |
dc.relation | QuantiXLie Center of Excellence, COST Action MP1306 Modern Tools for Spectroscopy on Advanced Materials: a European Modelling Platform, Natural Sciences and Engineering Research Council of Canada [RGPIN-2016-03689] | |
dc.rights | restrictedAccess | en |
dc.source | Ultramicroscopy | |
dc.subject | Graphene | en |
dc.subject | ab initio | en |
dc.subject | Hydrodynamic model | en |
dc.subject | (S)TEM | en |
dc.subject | EELS | en |
dc.title | Analytical modeling of electron energy loss spectroscopy of graphene: Ab initio study versus extended hydrodynamic model | en |
dc.type | article | en |
dc.rights.license | ARR | |
dcterms.abstract | Деспоја, Вито; Ђорђевић Тијана; Лyон, Кеенан; Радовић Иван; Мисковиц, Зоран Л.; Борка Душко; | |
dc.citation.volume | 184 | |
dc.citation.spage | 134 | |
dc.citation.epage | 142 | |
dc.identifier.wos | 000415650200016 | |
dc.identifier.doi | 10.1016/j.ultramic.2017.08.014 | |
dc.citation.other | Part number: A | |
dc.citation.rank | M21 | |
dc.identifier.pmid | 28888108 | |
dc.type.version | publishedVersion | |
dc.identifier.scopus | 2-s2.0-85028915577 |
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020 - Laboratorija za teorijsku fiziku i fiziku kondenzovane materije
Department of Theoretical Physics and Condensed Matter Physics -
040 - Laboratorija za atomsku fiziku
Department of Atomics Physics