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arxiv: cond-mat/9609034 · v1 · submitted 1996-09-03 · ❄️ cond-mat

Quantum Transition between an Antiferromagnetic Mott Insulator and d_(x² - y²) Superconductor in Two Dimensions

F.F. Assaad (Dept. Phys. UCSB) , M. Imada (ISSP. Univ. Tokyo) , D.J. Scalapino (Dept. Phys. UCSB) This is my paper
classification ❄️ cond-mat
keywords antiferromagnetichubbardinsulatorinteractionlatticemottquantumsquare
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We consider a Hubbard model on a square lattice with an additional interaction, $W$, which depends upon the square of a 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 $d_{x^2 -y^2}$ superconductor. This conclusion is reached on the basis of zero temperature quantum Monte Carlo simulations on lattice sizes up to $16 \times 16$.

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