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dc.contributor.authorSenger, R.T.en_US
dc.contributor.authorDaǧ, S.en_US
dc.contributor.authorÇiraci, S.en_US
dc.date.accessioned2016-02-08T10:22:37Z
dc.date.available2016-02-08T10:22:37Z
dc.date.issued2005en_US
dc.identifier.issn13000101
dc.identifier.urihttp://hdl.handle.net/11693/24001
dc.description.abstractIn recent ultra-high-vacuum transmission-electron-microscopy experiments evidence is found for the formation of suspended gold single-wall nanotubes (SWNTs) composed of five helical strands. Similar to carbon nanotubes, the (n,m) notation defines the structure of the gold SWNTs. Experimentally, only the (5,3) tube has been observed to form among several other possible alternatives. Using first-principles calculations we demonstrate that gold atoms can form both freestanding and tip-suspended, chiral, single-wall nanotubes. Although freestanding, infinite (5,5) tube is found to be energetically the most favorable, the experimentally observed (5,3) tube, suspended between two tips, corresponds to a local minimum in the variation of string-tension with the radius of the structure, which explains the experimental finding. Similarly, we predict the (4,3) tube as a favorable structure yet to be observed experimentally. Analysis of band structure, charge density, and quantum ballistic conductance suggests that the current on these nanowires is less chiral than expected, and there is no direct correlation between the numbers of conduction channels and helical strands. © TÜBİTAK.en_US
dc.language.isoEnglishen_US
dc.source.titleTurkish Journal of Physicsen_US
dc.subjectGold Nanotubeen_US
dc.subjectQuantum Conductanceen_US
dc.subjectBallisticsen_US
dc.subjectBand structureen_US
dc.subjectCarbon nanotubesen_US
dc.subjectCurrent densityen_US
dc.subjectElectric chargeen_US
dc.subjectElectric conductanceen_US
dc.subjectGolden_US
dc.subjectHelical springsen_US
dc.subjectQuantum theoryen_US
dc.subjectStructure (composition)en_US
dc.subjectFirst-principles calculationsen_US
dc.subjectGold Nanotubeen_US
dc.subjectQuantum Conductanceen_US
dc.subjectString-tensionen_US
dc.subjectNanotubesen_US
dc.titleMagic gold nanotubesen_US
dc.typeArticleen_US
dc.departmentDepartment of Physicsen_US
dc.citation.spage269en_US
dc.citation.epage276en_US
dc.citation.volumeNumber29en_US
dc.citation.issueNumber5en_US


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