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2011 | 119 | 5 | 592-594
Article title

Composite Fermion Dynamics in Half-Filled Landau Levels of Graphene

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Abstracts
EN
We report on exact-diagonalization studies of correlated many-electron states in the half-filled Landau levels of graphene, including pseudospin (valley) degeneracy. We demonstrate that the polarized Fermi sea of non-interacting composite fermions remains stable against a pairing transition in the lowest two Landau levels. However, it undergoes spontaneous depolarization, which is unprotected owing to the lack of single-particle pseudospin splitting. These results suggest the absence of the Pfaffian phase in graphene.
Keywords
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Contributors
author
  • TCM Group, Cavendish Laboratory, University of Cambridge, Cambridge, UK
  • Institute of Physics, Wrocław University of Technology, Wrocław, Poland
author
  • TCM Group, Cavendish Laboratory, University of Cambridge, Cambridge, UK
author
  • TCM Group, Cavendish Laboratory, University of Cambridge, Cambridge, UK
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Document Type
Publication order reference
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YADDA identifier
bwmeta1.element.bwnjournal-article-appv119n504kz
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