Hydrodynamic thermoelectric transport in Corbino geometry
arXiv:2112.08379 · doi:10.1103/PhysRevB.105.125302
Abstract
We study hydrodynamic electron transport in Corbino graphene devices. Due to the irrotational character of the flow, the forces exerted on the electron liquid are expelled from the bulk. We show that in the absence of Galilean invariance, force expulsion produces qualitatively new features in thermoelectric transport: (i) it results in drops of both voltage and temperature at the system boundaries and (ii) in conductance measurements in pristine systems, the electric field is not expelled from the bulk. We obtain thermoelectric coefficients of the system in the entire crossover region between charge neutrality and high electron density regime. The thermal conductance exhibits a sensitive Lorentzian dependence on the electron density. The width of the Lorentzian is determined by the fluid viscosity. This enables determination of the viscosity of electron liquid near charge neutrality from purely thermal transport measurements. In general, the thermoelectric response is anomalous: it violates the Matthiessen's rule, the Wiedemann-Franz law, and the Mott relation.
9 pages, 3 figures
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Cited by in corpus (16)
- Hydrodynamic approach to two-dimensional electron systems
- Hydrodynamic magnetoresistance in graphene Corbino devices
- Hydrodynamic electron transport in graphene Hall-bar devices
- Electronic viscosity and energy relaxation in neutral graphene
- Corbino magnetoresistance in neutral graphene
- Terahertz Radiation from the Dyakonov-Shur Instability of Hydrodynamic Electrons in a Corbino Geometry
- Current Noise of Hydrodynamic Electrons
- Giant magnetoresistance in weakly disordered non-Galilean invariant conductors
- Two-dimensional hydrodynamic electron flow through periodic and random potentials
- Thermoelectric properties of the Corbino disk in graphene
- Anomalous Electronic Transport in High Mobility Corbino Rings
- Non-monotonic temperature dependence of electron viscosity and crossover to high-temperature universal viscous fluid in monolayer and bilayer graphene
- Resolving the Corbino Shockley-Ramo Paradox for Hydrodynamic Current Noise
- Controlled generation and detection of a thermal bias in Corbino devices under the quantum Hall regime
- Tunable viscous layers in Corbino geometry using density junctions
- Spin-caloric resistance of Dirac plasma in a graphene Corbino device