The effect of disorder in superfluid graphene bilayers

B. Dellabetta, Matthew Gilbert

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

An excitonic superfluid is predicted to form in a bilayer graphene system at room temperature. The superfluid requires a very precise configuration to form, as two graphene layers must be separated by an oxide no more than a few nanometers thick. As such, it is imperative to study the effects of lattice defects inevitably arising during the fabrication process.We present and compare the performance characteristics of both ideal and disordered bilayer graphene systems at room temperature. We perform quantum transport calculations on graphene bilayers using the non-equilibrium Greens function (NEGF) formalism in an effort to elucidate the evolution of a Bose-Einstein Condensate under non-equilibrium conditions in the presence of lattice defects. We find that lattice defects spread throughout the channel have little effect on the device performance, but vacancies concentrated near the contacts cause a considerable reduction in device performance.

Original languageEnglish (US)
Title of host publication2010 14th International Workshop on Computational Electronics, IWCE 2010
Pages57-60
Number of pages4
DOIs
StatePublished - 2010
Event2010 14th International Workshop on Computational Electronics, IWCE 2010 - Pisa, Italy
Duration: Oct 26 2010Oct 29 2010

Other

Other2010 14th International Workshop on Computational Electronics, IWCE 2010
CountryItaly
CityPisa
Period10/26/1010/29/10

ASJC Scopus subject areas

  • Computational Theory and Mathematics
  • Electrical and Electronic Engineering

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