Relativistic Gurzhi effect in channels of Dirac materials
arXiv:1805.02987 · doi:10.1103/PhysRevB.97.205129
Abstract
Charge transport in channel-shaped 2D Dirac systems is studied employing the Boltzmann equation. The dependence of the resistivity on temperature and chemical potential is investigated. An accurate understanding of the influence of electron-electron interaction and material disorder allows us to identify a parameter regime, where the system reveals hydrodynamic transport behavior. We point out the conditions for three Dirac fermion specific features: heat flow hydrodynamics, pseudo\-diffusive transport, and the electron-hole scattering dominated regime. It is demonstrated that for clean samples the relativistic Gurzhi effect, a definite indicator of hydrodynamic transport, can be observed.
15 pages, 6 figures, 2 tables
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- The Hall effect in ballistic flow of two-dimensional interacting particles
- Counterflows in viscous electron-hole fluid
- Non-local hydrodynamic transport and collective excitations in Dirac fluids
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- Anti-Poiseuille flow in neutral graphene
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- Electron-hole scattering limited transport of Dirac fermions in a topological insulator
- Residual bulk viscosity of a disordered 2D electron gas
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- Rotational viscosity in spin resonance of hydrodynamic electrons
- Anomalous Gurzhi effect
- Anisotropic ultrafast optical response of terahertz pumped graphene
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- Superscreening by a Retroreflected Hole Backflow in Tomographic Electron Fluids