期刊
PHYSICAL REVIEW B
卷 62, 期 13, 页码 9083-9088出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.62.9083
关键词
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The interplay between antiferromagnetism and d-wave superconductivity is studied in a mean-field approximation for a generic microscopic Hamiltonian with short-range repulsion and near-neighbor attraction. In the presence of competing microscopic interactions, the phase boundaries of antiferromagnetic apd superconducting states are significantly modified in some region of the doping-temperature plane. The transition between superconductivity and antiferromagnetism occurs through a phase where both order parameters coexist with a third, dynamically generated, spin-tripler amplitude. This dynamical generation of a new order parameter is not restricted to a system with antiferromagnetism and cl-wave superconductivity, but is a generic feature for fermionic Systems. The dynamically generated spin;triplet order parameter is found to be robust to variations in the mean-field Hamiltonian.
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