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Charge order, superconductivity, and a global phase diagram of doped antiferromagnets

Matthias Vojta·Subir Sachdev
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Abstract

We investigate the interplay between lattice-symmetry breaking and superconducting order in a two-dimensional model of doped antiferromagnets, with long-range Coulomb interactions and Sp(2N) spin symmetry, in the large-N limit. Our results motivate the outline of a global phase diagram for the cuprate superconductors. We describe the quantum transitions between the phases, the evolution of their fermion excitation spectrum, and the experimental implications.

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Matthias Vojta, Subir Sachdev. 1999-11-30. Charge order, superconductivity, and a global phase diagram of doped antiferromagnets. https://doi.org/10.1103/physrevlett.83.3916

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