Exchange interactions and frustrated magnetism in single-side hydrogenated and fluorinated graphene

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Erscheinungsjahr:
2013
Medientyp:
Text
Beschreibung:
  • Magnetism in single-side hydrogenated (C2H) and fluorinated (C2F) graphene is analyzed in terms of the Heisenberg model with parameters determined from first principles. We predict a frustrated ground state for both systems, which means the instability of collinear spin structures and sheds light on the absence of a conventional magnetic ordering in defective graphene demonstrated in recent experiments. Moreover, our findings suggest a highly correlated magnetic behavior at low temperatures offering the possibility of a spin-liquid state.
Lizenz:
  • info:eu-repo/semantics/restrictedAccess
Quellsystem:
Forschungsinformationssystem der UHH

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oai:www.edit.fis.uni-hamburg.de:publications/1c3a0d67-892d-4059-a185-368d5862847b