Abstract
A d-wave superconductor, its phase coherence progressively destroyed by unbinding of vortex-antivortex pairs, suffers an instability related to chiral-symmetry breaking in The chiral manifold exhibits large degeneracy spanned by physical states acting as inherent “competitors” of d-wave superconductivity. Two of these states are associated with antiferromagnetic insulator and “stripe” phases, known to be stable in the pseudogap regime of cuprates near half-filling. The theory also predicts an additional, yet unobserved state: a phase-incoherent superconductor.
- Received 14 December 2001
DOI:https://doi.org/10.1103/PhysRevB.65.180511
©2002 American Physical Society