Qiantan Hong

Feb 16, 2024 | link.aps.org | Margarita Davydova |Patrick Ledwith |Leonid S. Levitov |Qiantan Hong

Electron hydrodynamics gives rise to surprising correlated behaviors in which electrons cooperate to quench dissipation and reduce the electric fields needed to sustain the flow. Such collective free flows are usually expected at the hydrodynamic length scales exceeding the electron-electron scattering mean free path ℓee. Here we predict that in two-dimensional electron gases, the collective free flows actually occur at distances much smaller than ℓee, in a nominally ballistic regime.