Title:
The Edge States of Epitaxial Graphene on SiC

dc.contributor.advisor de Heer, Walter A.
dc.contributor.author Hu, Yue
dc.contributor.committeeMember Jiang, Zhigang
dc.contributor.committeeMember First, Phillip
dc.contributor.committeeMember Mourigal, Martin
dc.contributor.committeeMember Khan, Asif
dc.contributor.department Physics
dc.date.accessioned 2022-01-14T16:12:43Z
dc.date.available 2022-01-14T16:12:43Z
dc.date.created 2021-12
dc.date.issued 2021-12-14
dc.date.submitted December 2021
dc.date.updated 2022-01-14T16:12:44Z
dc.description.abstract Exceptional ballistic transport was observed in sidewall epitaxial graphene nanoribbons on SiC (SWGNRs) at room temperature. These objects are of fundamental interest as they provide a direct access to charge neutral graphene with excellent transport properties. In this thesis, beyond sidewalls, we fabricate epitaxial graphene devices on different crystal faces on SiC, including the Si-face and non-polar facets. We introduce novel fabrication process flows that have high temperature annealing and Al2O3 as a protective layer to reduce the edge roughness of ribbons and the contamination from resist residue. Then we discuss transport measurement results of graphene nanoribbons on Si-face as well as on non-polar SiC facets, which might reveal a ballistic edge state channel 0+ with mean free path on the order of 30um and another edge state channel activated by temperature. These special epitaxial graphene edge states are interesting from a fundamental physics standpoint and may find applications in future graphene electronic devices.
dc.description.degree Ph.D.
dc.format.mimetype application/pdf
dc.identifier.uri http://hdl.handle.net/1853/66159
dc.language.iso en_US
dc.publisher Georgia Institute of Technology
dc.subject Graphene, Epitaxial Graphene, Semiconductor, Graphene Nanoribbon, Electrical Transport
dc.title The Edge States of Epitaxial Graphene on SiC
dc.type Text
dc.type.genre Dissertation
dspace.entity.type Publication
local.contributor.advisor de Heer, Walter A.
local.contributor.corporatename College of Sciences
local.contributor.corporatename School of Physics
relation.isAdvisorOfPublication 8ab28407-deb7-4b22-bb02-63fe30f19375
relation.isOrgUnitOfPublication 85042be6-2d68-4e07-b384-e1f908fae48a
relation.isOrgUnitOfPublication 2ba39017-11f1-40f4-9bc5-66f17b8f1539
thesis.degree.level Doctoral
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