Atomic, electronic, and transport properties of quantum point contacts on graphite surface

buir.supervisorCiraci, Salim
dc.contributor.authorKılıç, Çetin
dc.date.accessioned2016-01-08T20:14:44Z
dc.date.available2016-01-08T20:14:44Z
dc.date.copyright1997
dc.date.issued1997
dc.departmentDepartment of Physicsen_US
dc.descriptionAnkara : The Department of Physics and the Institute of Engineering and Science of Bilkent University, 1997.en_US
dc.descriptionThesis (Master's) -- Bilkent University, 1997.en_US
dc.descriptionIncludes bibliographical references (leaves 53-58).en_US
dc.descriptionCataloged from PDF version of article.
dc.description.abstractIn this thesis, the variation of conductance through a contact formed by a hard STM tip pressing on a graphite substrate is investigated. Our study involves the molecular dynamics simulations to reveal the evolution of the atomic structure during the growth of the contact, and ab initio electronic structure calculations of graphite that is under expansive and compressive strain along the [0001] axis. Combining the results obtained from these calculations, we propose a mechanism to explain the peculiar variation of the conductance. Owing to the layered structure of graphite, the variation of conductance exhibits dramatic differences from that of normal metals. It is predicted that in graphite, the conductance first increases, and then drops to a lower value with the puncture of the atomic plane. This phenomenon repeats quasi-periodically as the tip continues to press on the surface.
dc.description.degreeM.S.en_US
dc.description.statementofresponsibilityby Çetin Kılıçen_US
dc.format.extentv, 58 leaves : charts ; 30 cm.en_US
dc.identifier.itemidBILKUTUPB038357
dc.identifier.urihttp://hdl.handle.net/11693/17936
dc.language.isoEnglishen_US
dc.publisherBilkent Universityen_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.subjectGraphite
dc.subjectBallistic electron transport
dc.subjectQuantum point contact
dc.subjectMolecular dynamics simulations
dc.subjectBand structure calculations
dc.titleAtomic, electronic, and transport properties of quantum point contacts on graphite surfaceen_US
dc.title.alternativeGrafit yüzeyindeki noktsasal kuvantum değmelerinin atomik, elektronik ve nakil özellikleri
dc.typeThesisen_US

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