%0 Journal Article
%T Nuclear spin ferromagnetic phase transition in an interacting 2D electron gas
%A Pascal Simon
%A Daniel Loss
%J Physics
%D 2006
%I arXiv
%R 10.1103/PhysRevLett.98.156401
%X Electrons in a two-dimensional semiconducting heterostructure interact with nuclear spins via the hyperfine interaction. Using a a Kondo lattice formulation of the electron-nuclear spin interaction, we show that the nuclear spin system within an interacting two-dimensional electron gas undergoes a ferromagnetic phase transition at finite temperatures. We find that electron-electron interactions and non-Fermi liquid behavior substantially enhance the nuclear spin Curie temperature into the $mK$ range with decreasing electron density.
%U http://arxiv.org/abs/cond-mat/0611292v2