Why the critical temperature of high-Tc cuprate superconductors is so low: The importance of the dynamical vertex structure

@article{Kitatani2019WhyTC,
  title={Why the critical temperature of high-Tc cuprate superconductors is so low: The importance of the dynamical vertex structure},
  author={M. Kitatani and T. Schafer and H. Aoki and K. Held},
  journal={Physical Review B},
  year={2019},
  volume={99}
}
  • M. Kitatani, T. Schafer, +1 author K. Held
  • Published 2019
  • Physics
  • Physical Review B
  • To fathom the mechanism of high-temperature ($T_{\rm c}$) superconductivity, the dynamical vertex approximation (D$\Gamma$A) is evoked for the two-dimensional repulsive Hubbard model. After showing that our results well reproduce the cuprate phase diagram with a reasonable $T_{\rm c}$ and dome structure, we keep track of the scattering processes that primarily affect $T_{\rm c}$. We find that local particle-particle diagrams significantly screen the bare interaction at low frequencies, which in… CONTINUE READING
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