Year: 2025
Type: article
Abstract: A hallmark of electron hydrodynamics---a transport regime dominated by electron collisions---is that collisions enhance conduction and reduce dissipation, causing resistance to drop and conductance to rise with temperature ($T$). Here, the authors present a microscopic study of two-dimensional electron fluids, predicting linear-in-$T$ scaling of hydrodynamic conductance. This behavior, contrasting with the ${T}^{2}$ scaling in three-dimensional Fermi liquids, arises from a cascade of multiple long-lived viscous modes unique to two-dimensional systems. The number of modes relevant for transport grows as $T$ decreases, resulting in a non-Fermi-liquid linear-in-$T$ behavior.
Authors: Serhii Kryhin, Qiantan Hong, Leonid Levitov
Institution: Massachusetts Institute of Technology
Language: English
Subfield: Atomic and Molecular Physics, and Optics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W4407240368