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Paper   IPM / Physic / 12131
School of Physics
  Title:   Temperature Dependence of the Paramagnetic Spin Susceptibility of Doped Graphene
  Author(s): 
1.  A. Faridi
2.  M. Pashangpour
3.  R. Asgari
  Status:   Published
  Journal: Phys. Rev. B
  No.:  4
  Vol.:  85
  Year:  2012
  Pages:   045410
  Supported by:  IPM
  Abstract:
In this work, we present a semi-analytical expression for the temperature dependence of spin resolved dynamical density-density response function of massless Dirac fermions within the Random Phase Approximation. This result is crucial in order to describe thermodynamic properties of the interacting systems. In particular, we use it to make quantitative predictions for the paramagnetic spin susceptibility of doped graphene sheets. We find that, at low temperatures, the spin susceptibility behaves like as T−2 which is completely different from the temperature dependence of the magnetic susceptibility in undoped graphene sheets.

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