Coexistence of s-wave Superconductivity and Antiferromagnetism

Details Coexistence of s-wave Superconductivity and Antiferromagnetism Coexistence of s-wave Superconductivity and Antiferromagnetism

2002-12-11

arxiv.org/abs/cond-mat/0212244v1

Physics

Condensed Matter

Strongly Correlated Electrons

4 pages

Scientific paper

10.1103/PhysRevLett.91.056401

We study the phase diagram of a new model that exhibits a first order transition between s-wave superconducting and antiferromagnetic phases. The model, a generalized Hubbard model augmented with competing spin-spin and pair-pair interactions, was investigated using the projector Quantum Monte Carlo method. Upon varying the Hubbard $U$ from attractive to repulsive we find a first order phase transition between superconducting and antiferromagnetic states.

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