Hydrodynamic approach justified for low-temperature transport in Ioffe-Regel limit metal

TL;DR

This paper discusses how highly disordered metals in the Ioffe-Regel regime at low temperatures exhibit hydrodynamic behavior, suggesting that hydrodynamic phenomena may be relevant in such disordered electronic systems.

Contribution

It justifies the hydrodynamic approach for low-temperature transport in disordered metals within the Ioffe-Regel limit, highlighting the relevance of hydrodynamic phenomena.

Findings

Disordered metals in the Ioffe-Regel regime match hydrodynamic criteria

Hydrodynamic phenomena could be observable in these metals

Short length scale entered the kinematic viscosity

Abstract

The highly disordered metals dropped into Ioffe-Regel transport regime at low temperatures match unexpectedly the hydrodynamic criteria of the shortest length scale entered the kinematic viscosity. Numerous hydrodynamic phenomena, therefore, could be of reality in this case.