The v=1 Quantum Hall edge with a realistic potential
  We study the softening of the edge modes of the compact ferromagnetic v=1 Quantum Hall edge as the strength of the confining potential decreases. To obtain a realistic potential we use a displaced background charge plane. We find a phase transition into a spin textured edge for g<0.012 (g is the ratio betwen the Zeeman and Coulomb energies). 
Joachim Sjostrand, Anders Eklund, Anders Karlhede