The spin ordering of the observed quantized
Hall plateau with sigma
/h has become a pressing issue due to its pertinence to the identification of this state of matter as a potential
platform for topological quantum computation. Experimental and
studies have not, thus far, settled this issue, although they are consistent with a fully spin-polarized Moore-Read Pfaffian ground state. In this talk, I will present theoretical and numerical evidence that the ground state at this fraction is polarized even if the Zeeman energy vanishes . I will construct an effective Ginsburg-Landau theory by drawing analogies with the spin physics at nu=1, and the physics of triplet ferromagnetic superconductors. The novel features of a proposed phase diagram include the existence of partially polarized paired states, as well as novel topological spin textures as elementary excitations. I will discuss the experimental significance of our work.
 I. Dimov, B. Halperin, C. Nayak, arXiv:0710.1921, accepted to Phys. Rev. Lett..