Influence of disorder on electron-hole pairing in graphene bilayer

D. K. Efimkin, V. A. Kulbachinskii, Yu E. Lozovik

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We consider disorder effect on electron-hole pairing in the system of two graphene monolayers separated by dielectric barrier. The influence of charged impurities on temperature of phase transition is studied. In spite of large values of mobility of charge carriers in graphene disorder can considerably reduce temperature of electron-hole condensation in weak-coupling regime. The quantum hydrodynamics of the system is considered and phase stiffness of electron-hole condensate and temperature of Berezinskii-Kosterlitz-Thouless transition to the superfluid state are calculated.

Original languageEnglish
Pages (from-to)219-222
Number of pages4
JournalJETP Letters
Issue number4
Publication statusPublished - 1 Apr 2011
Externally publishedYes

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