# Spin order in paired quantum Hall states.

@article{Dimov2008SpinOI, title={Spin order in paired quantum Hall states.}, author={I. Dimov and B. Halperin and C. Nayak}, journal={Physical review letters}, year={2008}, volume={100 12}, pages={ 126804 } }

We consider quantum Hall states at even-denominator filling fractions, especially nu=5/2, in the limit of small Zeeman energy. Assuming that a paired quantum Hall state forms, we study spin ordering and its interplay with pairing. We give numerical evidence that at nu=5/2 an incompressible ground state will exhibit spontaneous ferromagnetism. The Ginzburg-Landau (GL) theory for the spin degrees of freedom of paired Hall states is a perturbed CP2 model. We compute the coefficients in the GL… CONTINUE READING

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