Electronic structure and transport property of disordered graphene

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Publication Type thesis
School or College College of Science
Department Physics
Author Wu, Shangduan
Title Electronic structure and transport property of disordered graphene
Date 2010-07
Description This thesis is concerned with the electronic structure and transport property of disordered graphene. In Chapter 1, we begin with an introduction to graphene. Next, we introduce some types of disordered models that have been applied to graphene. Then, we discuss the theory for a disordered system, including localization and different transport regimes. Finally, we end up discussing the motivations of our work and give an outline of the thesis. In Chapter 2, we give an introduction to the recursion method. Then, we introduce the application of the recursion method in the calculation of the electronic structure and transport property. Finally, we end up discussing random phase approximation, which is used to accelerate the speed of the method. In Chapter 3, electronic structure of disordered graphene, mainly including the density of states, is first introduced. Then, we discuss the important parameters and show the accuracy in the calculation of density of states. Last, average density of states (ADOS) in graphene with binary alloy disorders are studied with the recursion method. In Chapter 4, we begin with an introduction to transport property of disordered graphene, mainly including the diffusion coefficient and conductivity. Next, we discuss the important parameters and show the accuracy in the calculation of transport property. Then, transport properties of graphene with short-range disorder and Coulomb disorder are studied with the recursion method. Finally, transport properties of graphene with vacancy are also investigated both in the absence and in the presence of a perpendicular magnetic field.
Type Text
Publisher University of Utah
Subject Disorder; Electronic structure; Graphene; Transport property
Subject LCSH Electronic structure; Graphene -- Electric properties; Graphene -- Transport properties; Order-disorder models
Dissertation Institution University of Utah
Dissertation Name MS
Language eng
Rights Management ©Shangduan Wu
Format Medium application/pdf
Format Extent 2,957,880 bytes
Source Original in Marriott Library Special Collections, QC3.5 2010 .W8
ARK ark:/87278/s6pr89hs
Setname ir_etd
Date Created 2012-04-23
Date Modified 2018-04-19
ID 193015
Reference URL https://collections.lib.utah.edu/ark:/87278/s6pr89hs