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Paper   IPM / Physic / 9465
School of Physics
  Title:   Phase Diagram of Spin 1/2 XXZ Model with Dzyaloshinskii-Moriya Interaction
  Author(s): 
1.  R. Jafari
2.  A. langari
  Status:   Preprint
  Journal:
  Year:  2008
  Supported by:  IPM
  Abstract:
We have studied the phase diagram of the one dimensional XXZ model with Dzyaloshinskii-Moriya (DM) interaction. We have applied the quantum renormalization group (QRG) approach to get the stable fixed points, critical point and the scaling of coupling constants. This model has three phases, ferromagnetic, spin-fluid and Néel phases which are separated by a critical line which depends on the DM coupling constant. We have shown that the staggered magnetization is the order parameter of the system and investigated the influence of DM interaction on the chiral ordering as a helical magnetic order.

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