Magnetic response of a two-dimensional viscous electron fluid
arXiv:2310.10032 · doi:10.55730/1300-0101.2736
Abstract
It has been established that the Coulomb interactions can transform the electron gas into a viscous fluid. This fluid is realized in a number of platforms, including graphene and two-dimensional semiconductor heterostructures. The defining characteristic of the electron fluid is the formation of layers of charge carriers that are in local thermodynamic equilibrium, as in classical fluids. In the presence of nonuniformities, whirlpools and nontrivial flow profiles are formed, which have been directly imaged in recent experiments. In this paper, we theoretically study the response of the electron fluid to localized magnetic fields. We find that the electric current is suppressed by viscous vortices in regions where magnetic field is sharply varying, causing strong transport signatures. Experimentally, our considerations are relevant since local magnetic fields can be applied to the system through implanting adatoms or embedding micromagnets in the top-gate. Our theory is essential for the characterization and future applications of electron fluids in hydrodynamic spin transport.
arXiv comment9 pages, 2 figures, published in the Turkish Journal of Physics
References in corpus (25)
- Negative local resistance caused by viscous electron backflow in graphene
- Observation of the Dirac fluid and the breakdown of the Wiedemann-Franz law in graphene
- Evidence for hydrodynamic electron flow in PdCoO
- Superballistic flow of viscous electron fluid through graphene constrictions
- Hydrodynamic electron flow in high-mobility wires
- Measuring Hall Viscosity of Graphene's Electron Fluid
- Visualizing Poiseuille flow of hydrodynamic electrons
- Localized Magnetic States in Graphene
- Gate-Controlled Ionization and Screening of Cobalt Adatoms on a Graphene Surface
- Electrical and Thermal Transport at the Planckian Bound of Dissipation in the Hydrodynamic Electron Fluid of WP2
- Negative magnetoresistance in viscous flow of two-dimensional electrons
- Orbitally controlled Kondo effect of Co ad-atoms on graphene
- Viscous electron fluids
- Hydrodynamic approach to electronic transport in graphene
- Scanning Gate Microscopy in a Viscous Electron Fluid
- Hydrodynamic approach to two-dimensional electron systems
- Viscous transport and Hall viscosity in a two-dimensional electron system
- Geometric control of universal hydrodynamic flow in a two dimensional electron fluid
- Colossal negative magnetoresistance in a 2D electron gas
- Electronic hydrodynamics and the breakdown of the Wiedemann-Franz and Mott laws in interacting metals
- Hydrodynamic effects in interacting Fermi electron jets
- Thermal resistivity and hydrodynamics of the degenerate electron fluid in antimony
- Hydrodynamics, viscous electron fluid, and Wiedeman-Franz law in 2D semiconductors
- Micromagnets dramatically enhance effects of viscous hydrodynamic flow in two-dimensional electron fluid
- Hydrodynamic theory of vorticity-induced spin transport