Two-dimensional electron gases as non-Newtonian fluids
arXiv:2305.02883 · doi:10.1063/10.0022366
Abstract
Two-dimensional electron systems offer an appealing platform to explore long-lived excitations arising due to collinear carrier scattering enabled by phase-space constraints at the Fermi surface. Recently it was found that these effects can boost excitation lifetimes over the fundamental bound set by Landau's Fermi-liquid theory by a factor as large as with . Long-lived degrees of freedom possess the capability to amplify the response to weak perturbations, producing lasting collective memory effects. This leads to non-Newtonian hydrodynamics in 2D electron fluids driven by multiple viscous modes with scale-dependent viscosity. We describe these modes as Fermi surface modulations of odd parity evolving in space and time, and discuss their implications for experimental studies of electron hydrodynamics.
arXiv comment6pgs, 1fg
References in corpus (25)
- Hydrodynamics of electrons in graphene
- Imaging viscous flow of the Dirac fluid in graphene
- Visualizing Poiseuille flow of hydrodynamic electrons
- Higher-Than-Ballistic Conduction of Viscous Electron Flows
- Bulk and shear viscosities of the 2D electron liquid in a doped graphene sheet
- Imaging phonon-mediated hydrodynamic flow in WTe2
- Coulomb scattering lifetime of a two-dimensional electron gas
- Non-analytic corrections to the Fermi-liquid behavior
- Scanning Gate Microscopy in a Viscous Electron Fluid
- A Corbino disk viscometer for 2D quantum electron liquids
- Magnetohydrodynamics in graphene: shear and Hall viscosities
- Tomographic Dynamics and Scale-Dependent Viscosity in Two-Dimensional Electron Systems
- Viscosity of two-dimensional electrons
- The Hierarchy of Excitation Lifetimes in Two-Dimensional Fermi Gases
- Particle Collisions and Negative Nonlocal Response of Ballistic Electrons
- Hydrodynamic collective modes in graphene
- Anomalous Hydrodynamic Transport in Interacting Noncentrosymmetric Metals
- Collective modes in interacting two-dimensional tomographic Fermi liquids
- Electron hydrodynamics of anomalous Hall materials
- Anomalously long lifetimes in two-dimensional Fermi liquids
- Propagation of shear stress in strongly interacting metallic Fermi liquids enhances transmission of terahertz radiation
- Optical signatures of shear collective modes in strongly interacting Fermi liquids
- Angular Superdiffusion and Directional Memory in Two-Dimensional Electron Fluids
- Nonlocal conductivity, continued fractions and current vortices in electron fluids
- Magnetic hallmarks of viscous electron flow in graphene