A counterexample to the conjectured Planckian bound on transport

Abstract

It has recently been conjectured that the transport relaxation rate in metals is bounded above by the temperature of the system. In this work, we discuss the transport phenomenology of overdoped electron-doped cuprates, which we show constitute an unambiguous counterexample to this putative "Planckian" bound, raising serious questions about the efficacy of the bound.

5 pages, 3 figures

References in corpus (8)

• Viscosity in Strongly Interacting Quantum Field Theories from Black Hole Physics
• Theory of universal incoherent metallic transport
• Phenomenology of the normal state in-plane transport properties of high-$T_c$ cuprates
• Linear-in temperature resistivity from an isotropic Planckian scattering rate
• Fermi Surface reconstruction and anomalous low temperature resistivity in electron-doped La2-xCexCuO4
• Heavy non-degenerate electrons in doped strontium titanate
• Resistivity saturation in an electron-doped cuprate
• Planckian relaxation delusion in metals

Cited by in corpus (6)

• Planckian Dissipation in Metals
• Non-Fermi liquid phase and linear-in-temperature scattering rate in overdoped two dimensional Hubbard model
• Planckian properties of 2D semiconductor systems
• Violation of Luttinger's theorem in the simplest doped Mott insulator: Falicov-Kimball model in strong correlation limit
• Planckian Dissipation and non-Ginzburg-Landau Type Upper Critical Field in Bi2201
• Stranger than Metals