Phys. Rev. B 71, 054508 (2005) [5 pages]t-J model for a bilayer: Coexisting superconductivity and planar-flux phasesReceived 19 August 2004; published 15 February 2005 We study the bilayer generalization of the t-J model with both hopping and exchange coupling between the two layers. Within the enlarged mean-field parameter space, we find dimerized, s+id, flux ladder and planar flux phases. Of particular interest is the planar flux phase that persists farther away from half-filling, and coexists with, and even stabilizes, dx2−y2-superconductivity. The orbital currents in the phase generate staggered moments that are rotated away from the c-axis. © 2005 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevB.71.054508
DOI:
10.1103/PhysRevB.71.054508
PACS:
74.20.Mn, 74.20.−z, 74.25.Jb
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