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The theory of Coulomb Drag in Graphene Systems

Flatres, Simon (2011)
Ph.D. thesis, University of Birmingham.

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This thesis addresses two similar problems that combine the theory of Coulomb drag with the emerging field of graphene physics. First, the theory of Coulomb drag between two graphene mono-layers is extended to include finite temperature. It is found that the effect is strongly enhanced at intermediate temperatures by coupled plasmon modes. This behaviour is similar to that seen between two dimensional electron gasses. In the second, we investigate the finite temperature polarisability of a graphene bilayer and apply this to the problem of Coulomb drag in a bilayer system. We find that enhancement due to coupled plasmon nodes is suppressed, and dependence of the position and width of the plasmon peak on carrier density and interlayer separation is enhanced.

Type of Work:Ph.D. thesis.
Supervisor(s):Smith, Robert
School/Faculty:Colleges (2008 onwards) > College of Engineering & Physical Sciences
Department:School of Physics and Astronomy
Keywords:Theoretical Condensed Matter Physics
Subjects:QC Physics
Institution:University of Birmingham
ID Code:1456
This unpublished thesis/dissertation is copyright of the author and/or third parties. The intellectual property rights of the author or third parties in respect of this work are as defined by The Copyright Designs and Patents Act 1988 or as modified by any successor legislation. Any use made of information contained in this thesis/dissertation must be in accordance with that legislation and must be properly acknowledged. Further distribution or reproduction in any format is prohibited without the permission of the copyright holder.
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