• DOI:10.1103/PHYSREVB.101.214520
• Corpus ID: 214605978

Universal relationship between the energy scales of the pseudogap phase, the superconducting state, and the charge-density-wave order in copper oxide superconductors

@article{Loret2020UniversalRB,
  title={Universal relationship between the energy scales of the pseudogap phase, the superconducting state, and the charge-density-wave order in copper oxide superconductors},
  author={Bastien Loret and N Auvray and G. D. Gu and Anne Forget and Doroth{\'e}e Colson and Maximilien Cazayous and Yann Gallais and Indranil Paul and Marcello Civelli and Alain Sacuto},
  journal={Physical Review B},
  year={2020},
  volume={101}
}

• B. Loret, N. Auvray, +7 authors A. Sacuto
• Published 19 March 2020
• Physics
• Physical Review B

We report the hole doping dependencies of the pseudogap phase energy scale, $2\Delta_{\rm PG}$, the anti-nodal (nodal) superconducting energy scales $2\Delta^{AN}_{\rm SC}$ ($2\Delta^{N}_{\rm SC}$) and the charge density wave energy scale, $2\Delta_{\rm CDW}$. They have been extracted from the electronic Raman responses of distinct copper oxide families. For all the cuprates studied, we reveal universal doping dependencies which suggest that $2\Delta_{\rm PG}$, $2\Delta^{AN}_{\rm SC}$ and $2\Delta_{\rm CDW}$ are governed by common microscopic interactions and that these interactions become relevant well above the superconducting transition at $T_c$. In sharp contrast, $2\Delta^N_{\rm SC}$ tracks the doping dependence of $T_c$, appearing to be controlled by a different kind of interactions than the energy scales above.