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arXiv · 2202.10577

Quantifying the role of antiferromagnetic fluctuations in the superconductivity of the doped Hubbard model

Xinyang Dong·Emanuel Gull·Andrew. J. Millis
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Abstract

We study the contribution of the electron-spin fluctuation coupling to the superconducting state of the two dimensional Hubbard model within dynamical cluster approximation (DCA) using a numerical exact continuous time Monte Carlo solver. By analyzing the frequency dependence of the self energy, we show that only about half of the superconductivity can be attributed to a "pairing glue" arising from treating spin fluctuations as a pairing boson in the standard one-loop theory.

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Xinyang Dong, Emanuel Gull, Andrew. J. Millis. 2022-02-21. Quantifying the role of antiferromagnetic fluctuations in the superconductivity of the doped Hubbard model. https://doi.org/10.1038/s41567-022-01710-z

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