Fractionalization in dimerized graphene and graphene bilayer

Details Fractionalization in dimerized graphene and graphene bilayer Fractionalization in dimerized graphene and graphene bilayer

2008-06-20

arxiv.org/abs/0806.3319v1

Phys. Rev. B 78, 245424 (2008)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

8 pages

Scientific paper

10.1103/PhysRevB.78.245424

We show that the fractional statistics of quasiparticles in dimerized graphene, in recent proposals for charge and statistics fractionalization, can have two realizations depending whether elementary objects can be considered as point-like or extended objects. Therefore, there are two phases of proposed excitations and we give their topological descriptions with their respective statistics. We propose that a natural setting for fractionalization are certain systems with excitonic instabilities and demonstrate this by an example of graphene bilayer.

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