Spin-charge-separated superconductivity: The two-component Abelian-Higgs model
J. P. Rodriguez
DOI 10.1103/PhysRevB.49.3663 · Physical Review B
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Abstract
A square-lattice gauge-theory model for spin-charge-separated superconductivity is introduced. The phases of the spinon and holon order parameters couple gauge invariantly via a statistical gauge field, which arises from the implicit strong interaction physics. We find that physical electronic phase correlations show a superconductor–normal-metal phase transition of the Berezinskii-Kosterlitz-Thouless type, while statistical gauge-field excitations are strictly gapless. These results are discussed in the context of both the superconducting and the normal-state properties of the oxide superconductors.
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