Non-Fermi liquid behavior of scattering rate in three-orbital Emery model
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| Format: | Preprint |
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2024
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| _version_ | 1866909139434733568 |
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| author | Mao, Tianzong Jiang, Mi |
| author_facet | Mao, Tianzong Jiang, Mi |
| contents | Motivated by the recent findings on the $T$-linear electronic scattering rate in the two-dimensional Hubbard model, we have investigated the three-orbital Emery model and its temperature-dependent electronic and quasiparticle scattering rates by adopting dynamical cluster quantum Monte Carlo simulations. By focusing on two characteristic site energies $ε_p$ of O-2$p$ orbital relevant to cuprates and nickelates separately, our exploration discovered that, for $ε_p=3.24$ relevant to cuprates, the scattering rate can exhibit a linear-$T$ dependence at low temperature for a range of intermediate densities. In contrast, for larger $ε_p=6.0$ presumably relevant to nickelates, a wide range of densities support a downturn of the scattering rate below the temperature scale $T\sim0.1$ with possibly two consecutive nearly linear-$T$ regimes connected via a smooth crossover around $T\sim0.1$. Furthermore, the temperature dependent quasiparticle scattering rate generically departs from the unity slope as predicted by the Planckian dissipation theory. Our presented work provides valuable insights on the extensively studied three-orbital Emery model, particularly on the quantitative examination of non-Fermi liquid features of scattering rates. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2403_11218 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Non-Fermi liquid behavior of scattering rate in three-orbital Emery model Mao, Tianzong Jiang, Mi Strongly Correlated Electrons Superconductivity Motivated by the recent findings on the $T$-linear electronic scattering rate in the two-dimensional Hubbard model, we have investigated the three-orbital Emery model and its temperature-dependent electronic and quasiparticle scattering rates by adopting dynamical cluster quantum Monte Carlo simulations. By focusing on two characteristic site energies $ε_p$ of O-2$p$ orbital relevant to cuprates and nickelates separately, our exploration discovered that, for $ε_p=3.24$ relevant to cuprates, the scattering rate can exhibit a linear-$T$ dependence at low temperature for a range of intermediate densities. In contrast, for larger $ε_p=6.0$ presumably relevant to nickelates, a wide range of densities support a downturn of the scattering rate below the temperature scale $T\sim0.1$ with possibly two consecutive nearly linear-$T$ regimes connected via a smooth crossover around $T\sim0.1$. Furthermore, the temperature dependent quasiparticle scattering rate generically departs from the unity slope as predicted by the Planckian dissipation theory. Our presented work provides valuable insights on the extensively studied three-orbital Emery model, particularly on the quantitative examination of non-Fermi liquid features of scattering rates. |
| title | Non-Fermi liquid behavior of scattering rate in three-orbital Emery model |
| topic | Strongly Correlated Electrons Superconductivity |
| url | https://arxiv.org/abs/2403.11218 |