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Phys. Rev. Lett. 83, 3916 - 3919 (1999)

Charge Order, Superconductivity, and a Global Phase Diagram of Doped Antiferromagnets

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Matthias Vojta and Subir Sachdev
Department of Physics, Yale University, P.O. Box 208120, New Haven, Connecticut 06520-8120

Received 16 June 1999

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.


©1999 The American Physical Society

URL: http://link.aps.org/doi/10.1103/PhysRevLett.83.3916
DOI: 10.1103/PhysRevLett.83.3916
PACS: 74.20.Mn, 71.10.Fd, 74.72.-h

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