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d-wave pairing confirmed in the 2D Hubbard model. M. Jarrell. DMR-0312680

d-wave pairing confirmed in the 2D Hubbard model. M. Jarrell. DMR-0312680. 16B. 8A. 16A. Number of independent neighboring d-wave plaquettes:. Z d =1. Z d =2. Z d =3.

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d-wave pairing confirmed in the 2D Hubbard model. M. Jarrell. DMR-0312680

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  1. d-wave pairing confirmed in the 2D Hubbard model. M. Jarrell. DMR-0312680 16B 8A 16A Number of independent neighboring d-wave plaquettes: Zd=1 Zd=2 Zd=3 The discovery of a room temperature superconductor would revolutionize our society, in much the same way as the transistor did. Unfortunately, due to complexity of these materials the underlying mechanism is unknown, so we are unable to design them. The accepted paradigm for these materials is correlated electrons on a square lattice, the 2D Hubbard model. We have shown that the traditional small clusters, those with small Zd (left), used to study this model can strongly suppress superconductivity, giving misleading results. Massively parallel simulations, the largest ever of this type, on well-chosen clusters (Zd=4, green symbols on graph) confirm the existence of superconductivity. Th. Maier et al. Cond-mat/0504529. ClusterZd 4A 0 8A 1 12A 2 16A 3 20A 4 24A 4 26A 4 Superconducting Transition Tc 0.025t

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