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Origin of linear-in-temperature resistivity in strange metals

Determine the microscopic mechanism responsible for the linear-in-temperature resistivity in the strange metal phase and clarify its relation, if any, to hydrodynamic transport.

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Background

Strange metals display ρ ∝ T over wide temperature ranges with unusually short scattering times. While hydrodynamic perspectives have been proposed among other frameworks, the fundamental origin of T-linear resistivity remains unsettled.

References

The strongly correlated strange metal phase is one such example, which has a low resistivity $\rho \sim T$ that mysteriously scales linearly with $T$. Several works have suggested links to hydrodynamic behavior , though its true origin is still unclear.

— Hydrodynamics of the electronic Fermi liquid: a pedagogical overview (2504.01249 - Hui et al., 1 Apr 2025) in Section “Conclusion and Outlook”