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Paper   IPM / Physic / 8062
School of Physics
  Title:   Many-Body Effective Mass and Spin Susceptibility in A Quasi-Two-Dimensional Electron Liquid
  Author(s): 
1.  R. Asgari
2.  B. Tanatar
  Status:   Published
  Journal: Phys. Rev. B
  Vol.:  74
  Year:  2006
  Pages:   075301
  Supported by:  IPM
  Abstract:
We present numerical calculations of the effect of electron-electron interactions in the effective mass and the spin susceptibility in a GaAs/AlGaAs triangular quantum well. For this purpose, we consider quantum many-body effects associated with charge- and spin-density fluctuations induced many body vertex corrections. The approach is based on Fermi hypernetted-chain self-consistent calculation to calculate the many body local field factors. We find the spin susceptibility in good agreement with the recent experimental measurements and quantum Monte Carlo data for such a system in the weak and intermediate coupling limits.

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