Quantum Transition between an Antiferromagnetic Mott Insulator and dx2−y2 Superconductor in Two Dimensions
F. F. Assaad, M. Imada, D. J. Scalapino
DOI 10.1103/PhysRevLett.77.4592 · Physical Review Letters
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Abstract
We consider a Hubbard model on a square lattice with an additional interaction, W, which depends upon the square of the near-neighbor hopping. At half filling and a constant value of the Hubbard repulsion, increasing the strength of the interaction W drives the system from an antiferromagnetic Mott insulator to a dx2−y2 superconductor. This conclusion is reached on the basis of zero temperature quantum Monte Carlo simulations on lattice sizes up to 16×16.
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