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dc.contributor.authorFadaie, M.
dc.contributor.authorDideban, D.
dc.contributor.authorGülseren, Og̈uz
dc.date.accessioned2021-02-27T15:48:54Z
dc.date.available2021-02-27T15:48:54Z
dc.date.issued2020-04
dc.identifier.issn0947-8396
dc.identifier.urihttp://hdl.handle.net/11693/75624
dc.description.abstractIn this study, we performed a density functional theory based investigation of the structural, electronic, and optical properties of a stanane, fully hydrogenated stanene SnH, and armchair stanane nanoribbons ASnHNRs. Our full geometry optimization calculations show stanane has 0.84 Å buckled height and the buckled structure is preserved in ASnHNRs. The optimized lattice parameter of stanane, Sn–Sn, and Sn–H bond length are 4.58 Å, 2.75Å, and 1.73 Å, respectively. Electronic structure calculations show that stanane is a moderate-band-gap semiconductor with a direct band gap of 1.2 eV and ASnHNRs are wide-band-gap semiconductors. The band gap of ASnHNRs decreases as the ribbons width increases. We investigated the optical properties for two directions of polarization. For perpendicular-polarized light, the imaginary part of dielectric function ε2(ω)ε2(ω) of stanane peaks between 5 and 10 eV; while for the parallel-polarized light, the peaks are seen in a wide range of energy. According to the results, stanane is a good absorptive matter, especially for visible regions of the electromagnetic spectrum. The presence of anisotropy with respect to the type of light polarization is observed in ASnHNRs also. In these structures, the main peak of ε2(ω)ε2(ω) is located at 3.4 eV for parallel- and in 6–8 eV for perpendicular-polarized light.en_US
dc.language.isoEnglishen_US
dc.source.titleApplied Physics A: Materials Science and Processingen_US
dc.relation.isversionofhttps://dx.doi.org/10.1007/s00339-020-03584-5en_US
dc.subjectStaneneen_US
dc.subjectTwo-dimensional structureen_US
dc.subjectDielectric functionen_US
dc.subjectStructural propertiesen_US
dc.subjectOptical propertiesen_US
dc.subjectStananeen_US
dc.subjectTopological insulatoren_US
dc.titleElectronic and optical properties of stanane and armchair stanane nanoribbonsen_US
dc.typeArticleen_US
dc.departmentDepartment of Physicsen_US
dc.citation.spage460-1en_US
dc.citation.epage460-8en_US
dc.citation.volumeNumber126en_US
dc.citation.issueNumber6en_US
dc.identifier.doi10.1007/s00339-020-03584-5en_US
dc.publisherSpringeren_US
dc.contributor.bilkentauthorGülseren, Og̈uz


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