Two $T$-linear scattering rate regimes in the triangular lattice Hubbard model

Abstract

In recent years, the $T$-linear scattering rate found at low temperatures, defining the strange metal phase of cuprates, has been a subject of interest. Since a wide range of materials have a scattering rate that obeys the equation $\hslash /\tau \approx k_{B}T$, the idea of a universal Planckian limit on the scattering rate has been proposed. However, there is no consensus on proposed theories yet. In this work, we present our results for the $T$-linear scattering rate in the triangular lattice Hubbard model obtained using the dynamical cluster approximation. We find two regions with $T$-linear scattering rate in the $T$ -- $p$ phase diagram: one emerges from the pseudogap to correlated Fermi liquid phase transition at low doping, whereas the other is solely caused by large interaction strength at large doping.

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Cited by in corpus (3)

• Strange metals and planckian transport in a gapless phase from spatially random interactions
• Pseudogap and strange metal states in the square-lattice Hubbard model: A comprehensive study
• The Frenkel line and the pseudogap: an analogy between classical and electronic fluids