A comparative study of transport properties of monolayer graphene and AlGaN-GaN heterostructure

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dc.authoridozdemir, meryem -- 0000-0002-7495-8014; Yarar, Zeki -- 0000-0002-5555-0363;
dc.contributor.authorÖzdemir, Mustafa
dc.contributor.authorAtasever, Ö.
dc.contributor.authorÖzdemir, Berrin
dc.contributor.authorYarar, Zeki
dc.contributor.authorÖzdemir, Meryem
dc.date.accessioned13.07.201910:50:10
dc.date.accessioned2019-07-29T19:28:22Z
dc.date.available13.07.201910:50:10
dc.date.available2019-07-29T19:28:22Z
dc.date.issued2015
dc.departmentFen-Edebiyat Fakültesi
dc.description.abstractThe electronic transport properties of monolayer graphene are presented with an Ensemble Monte Carlo method where a rejection technique is used to account for the occupancy of the final states after scattering. Acoustic and optic phonon scatterings are considered for intrinsic graphene and in addition, ionized impurity and surface roughness scatterings are considered for the case of dirty graphene. The effect of screening is considered in the ionized impurity scattering of electrons. The time dependence of drift velocity of carriers is obtained where overshoot and undershoot effects are observed for certain values of applied field and material parameters for intrinsic graphene. The field dependence of drift velocity of carriers showed negative differential resistance and disappeared as acoustic scattering becomes dominant for intrinsic graphene. The variation of electron mobility with temperature is calculated for intrinsic (suspended) and dirty monolayer graphene sheets separately and they are compared. These are also compared with the mobility of two dimensional electrons at an AlGaN/GaN heterostructure. It is observed that interface roughness may become very effective in limiting the mobility of electrons in graphene.
dc.description.sponsorshipCukurova University Research Fund [FEF2012D18]
dc.description.sponsorshipThe work presented in this paper is supported by Cukurova University Research Fund No: FEF2012D18.
dc.identifier.doi10.1063/1.4926341
dc.identifier.issn2158-3226
dc.identifier.issue7en_US
dc.identifier.scopusqualityQ2
dc.identifier.urihttps://doi.org/10.1063/1.4926341
dc.identifier.urihttps://hdl.handle.net/20.500.12451/6028
dc.identifier.volume5en_US
dc.identifier.wosWOS:000358922500001
dc.identifier.wosqualityN/A
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherAmerican Institute Physics
dc.relation.ispartofAIP ADVANCES
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/openAccess
dc.titleA comparative study of transport properties of monolayer graphene and AlGaN-GaN heterostructure
dc.typeArticle

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