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Paper   IPM / Physic / 12250
School of Physics
  Title:   Spin Polarization Dependence of Quasiparticle Properties in Graphene
  Author(s): 
1.  A. Qaiumzadeh
2.  Kh. Jahanbani
3.  R. Asgari
  Status:   Published
  Journal: Phys. Rev. B
  No.:  23
  Vol.:  85
  Year:  2012
  Pages:   235428
  Supported by:  IPM
  Abstract:
We address spin polarization dependence of graphene?s Fermi liquid properties quantitatively using a microscopic Random Phase Approximation theory in an interacting spin-polarized Dirac electron system. We show an enhancement of the minority-spin many-body velocity renormalization at fully spin polarization due to the exchange interaction between electrons near the Fermi surface. The spin-polarization dependence of the carrier Fermi velocity is of significance in various spintronic applications.

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