Nonmonotonic magnetoresistance of a two-dimensional viscous electron-hole fluid in a confined geometry

Abstract

Ultra-pure conductors may exhibit hydrodynamic transport where the collective motion of charge carriers resembles the flow of a viscous fluid. In a confined geometry (e.g., in ultra-high quality nanostructures) the electronic fluid assumes a Poiseuille-like flow. Applying an external magnetic field tends to diminish viscous effects leading to large negative magnetoresistance. In two-component systems near charge neutrality the hydrodynamic flow of charge carriers is strongly affected by the mutual friction between the two constituents. At low fields, the magnetoresistance is negative, however at high fields the interplay between electron-hole scattering, recombination, and viscosity results in a dramatic change of the flow profile: the magnetoresistance changes its sign and eventually becomes linear in very high fields. This novel non-monotonic magnetoresistance can be used as a fingerprint to detect viscous flow in two-component conducting systems.

10 pages, 8 figures

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Cited by in corpus (29)

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• Visualizing Poiseuille flow of hydrodynamic electrons
• Direct observation of vortices in an electron fluid
• Hydrodynamic approach to two-dimensional electron systems
• Electronic hydrodynamics in graphene
• A classical mechanism for negative magnetoresistance in two-dimensional systems in the ballistic regime
• Two-dimensional electron honey: highly viscous electron fluid in which transverse magnetosonic waves can propagate
• Hydrodynamic collective modes in graphene
• Dissipative and Hall viscosity of a disordered 2D electron gas
• A magnetic resonance in high-frequency viscosity of two-dimensional electrons
• The Hall effect in ballistic flow of two-dimensional interacting particles
• Counterflows in viscous electron-hole fluid
• Vorticity of viscous electronic flow in graphene
• Hydrodynamic approach to electronic transport in graphene: energy relaxation
• Negative Viscosity and Eddy Flow of Imbalanced Electron-Hole Liquid in Graphene
• Anti-Poiseuille flow in neutral graphene
• Valley and spin accumulation in ballistic and hydrodynamic channels
• Electronic viscosity and energy relaxation in neutral graphene
• Corbino magnetoresistance in neutral graphene
• Rotational viscosity in spin resonance of hydrodynamic electrons
• Plasmonic Helicity-Driven Detector of terahertz radiation
• Hall viscosity and hydrodynamic inverse Nernst effect in graphene
• Driving Viscous Hydrodynamics in Bulk Electron Flow in Graphene Using Micromagnets
• Ballistic magnetotransport in graphene
• Giant magnetoresistance in weakly disordered non-Galilean invariant conductors
• Ballistic flow of two-dimensional electrons in a magnetic field
• Pseudo-hydrodynamic flow of quasiparticles in semimetal WTe2 at room temperature
• Lorenz ratios of diagonal and Hall conductivities in a Dirac electron liquid
• Slow interband recombination promotes an anomalous thermoelectric response of the $p-n$ junctions