dc.contributor.author | Dimov, Ivailo | |
dc.contributor.author | Halperin, Bertrand | |
dc.contributor.author | Nayak, Chetan | |
dc.date.accessioned | 2009-06-17T14:50:48Z | |
dc.date.issued | 2008 | |
dc.identifier.citation | Dimov, Ivailo, Bertrand I. Halperin, and Chetan Nayak. 2008. Spin order in paired quantum Hall states. Physical Review Letters 100, no. 12: 126804. | en |
dc.identifier.issn | 0031-9007 | en |
dc.identifier.uri | http://nrs.harvard.edu/urn-3:HUL.InstRepos:3110942 | |
dc.description.abstract | 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 CP<sup>2</sup> model. We compute the coefficients in the GL theory by a BCS Stoner mean-field theory for coexisting order parameters, and show that even if repulsion is smaller than that required for a Stoner instability, ferromagnetic fluctuations can induce a partially or fully polarized superconducting state. | en |
dc.description.sponsorship | Physics | en |
dc.language.iso | en_US | en |
dc.publisher | American Physical Society | en |
dc.relation.isversionof | http://dx.doi.org/10.1103/PhysRevLett.100.126804 | en |
dc.relation.hasversion | http://arxiv.org/abs/0710.1921v1 | en |
dash.license | LAA | |
dc.title | Spin Order in Paired Quantum Hall States | en |
dc.relation.journal | Physical Review Letters | en |
dc.identifier.doi | 10.1103/PhysRevLett.100.126804 | * |
dash.contributor.affiliated | Halperin, Bertrand | |