Spontaneous Layer-Pseudospin Domain Walls in Bilayer Graphene
  Bilayer graphene is susceptible to a family of unusual broken symmetry states with spin and valley dependent layer polarization. We report on a microscopic study of the domain walls in these systems, demonstrating that they have interesting microscopic structures related to order-induced topological characters. We use our results to estimate Ginzburg-Landau model parameters and transition temperatures for the ordered states of bilayer graphene. 
Xiao Li, Fan Zhang, Qian Niu, and A. H. MacDonald
cond-mat.mes-hall cond-mat.mtrl-sci cond-mat.str-el