Topological Gauge Structure and Phase Diagram for Weakly Doped Antiferromagnets
arXiv:cond-mat/0206560 · doi:10.1103/PhysRevLett.90.157003
Abstract
We show that the topological gauge structure in the phase string theory of the {\rm t-J} model gives rise to a global phase diagram of antiferromagnetic (AF) and superconducting (SC) phases in a weakly doped regime. Dual confinement and deconfinement of holons and spinons play essential roles here, with a quantum critical point at a doping concentration . The complex experimental phase diagram at low doping is well described within such a framework.
4 pages, 2 figures, modified version, to appear in Phys. Rev. Lett
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- Emergence of Topological Fermi Liquid from a Strongly Correlated Bosonic System in Optical Superlattices