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Competition between Antiferromagnetism and Superconductivity in High $T_c$ Cuprates

David Senechal·P. -L. Lavertu·M. -A. Marois·A. -M. S. Tremblay
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Abstract

Using variational cluster perturbation theory we study the competition between d-wave superconductivity (dSC) and antiferromagnetism (AF) in the the t-t'-t''-U Hubbard model. Large scale computer calculations reproduce the overall ground state phase diagram of the high-temperature superconductors as well as the one-particle excitation spectra for both hole- and electron-doping. We identify clear signatures of the Mott gap as well as of AF and of dSC that should be observable in photoemission experiments.

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David Senechal, P. -L. Lavertu, M. -A. Marois, A. -M. S. Tremblay. 2004-10-06. Competition between Antiferromagnetism and Superconductivity in High $T_c$ Cuprates. https://doi.org/10.1103/physrevlett.94.156404

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