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Systematic study of d-wave superconductivity in the 2D repulsive Hubbard model

T. A. Maier·M. Jarrell·T. C. Schulthess·P. R. C. Kent·J. B. White
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Abstract

The cluster size dependence of superconductivity in the conventional two-dimensional Hubbard model, commonly believed to describe high-temperature superconductors, is systematically studied using the Dynamical Cluster Approximation and Quantum Monte Carlo simulations as cluster solver. Due to the non-locality of the d-wave superconducting order parameter, the results on small clusters show large size and geometry effects. In large enough clusters, the results are independent of the cluster size and display a finite temperature instability to d-wave superconductivity.

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T. A. Maier, M. Jarrell, T. C. Schulthess, P. R. C. Kent, J. B. White. 2005-12-01. Systematic study of d-wave superconductivity in the 2D repulsive Hubbard model. https://doi.org/10.1103/physrevlett.95.237001

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