Fig. 1: Comparison of the superconducting (SC) and charge susceptibilities at half-filling. | Communications Physics

Fig. 1: Comparison of the superconducting (SC) and charge susceptibilities at half-filling.

From: Relative importance of nonlinear electron-phonon coupling and vertex corrections in the Holstein model

Fig. 1

The singlet-pairing (χSC) and charge-density-wave (χCDW(π, π)) susceptibilities vs. temperature for dimensionless e–ph couplings of λ = 0.1 (a, b) and 0.2 (c, d) at half-filling and Ω = 0.5t. Results for the model with and without nonlinear corrections are shown using closed and open symbols, respectively. Error bars on the DQMC data points are one standard deviation statistical errors estimated using jackknife resampling.

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