Thermoelectricity in Quantum-Hall Corbino Structures

Abstract

We measure the thermoelectric response of Corbino structures in the quantum Hall effect regime and compare it with a theoretical analysis. The measured thermoelectric voltages are qualitatively and quantitatively simulated based upon the independent measurement of the conductivity indicating that they originate predominantly from the electron diffusion. Electron-phonon interaction does not lead to a phonon-drag contribution in contrast to earlier Hall-bar experiments. This implies a description of the Onsager coefficients on the basis of a single transmission function, from which both thermovoltage and conductivity can be predicted with a single fitting parameter. It furthermore let us predict a figure of merit for the efficiency of thermoelectric cooling which becomes very large for partially filled Landau levels (LL) and high magnetic fieldse of merit can be estimated which becomes very large for partially filled Landau levels and high magnetic fields.

main article 8 pages, 8 figures

References in corpus (18)

• Non-Abelian Anyons and Topological Quantum Computation
• Fundamental aspects of steady-state conversion of heat to work at the nanoscale
• Huge thermoelectric effects in ferromagnet-superconductor junctions in the presence of a spin-splitting field
• Chiral thermoelectrics with quantum Hall edge states
• Thermopower as a Possible Probe of Non-Abelian Quasiparticle Statistics in Fractional Quantum Hall Liquids
• Quantum heat engines based on electronic Mach-Zehnder interferometers
• Interference induced thermoelectric switching and heat rectification in quantum Hall junctions
• Optimal quantum interference thermoelectric heat engine with edge states
• Thermoelectric response of fractional quantized Hall and re-entrant insulating states in the N=1 Landau level
• Power, Efficiency and Fluctuations in a Quantum Point Contact as Steady-State Thermoelectric Heat Engine
• Thermopower of Quantum Hall States in Corbino Geometry as a Measure of Quasiparticle Entropy
• Thermopower of Two-Dimensional Electrons at $\nu$ = 3/2 and 5/2
• Optimal thermoelectricity with quantum spin-Hall edge states
• Low-field diffusion magneto-thermopower of a high mobility two-dimensional electron gas
• Enhanced thermoelectric response in the fractional quantum Hall effect
• Landau Cooling in Metal-Semiconductor Nanostructures
• Temperature-stabilized differential amplifer for low-noise DC measurements
• Diffusion Thermopower of Quantum Hall States Measured in Corbino Geometry

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• Rectification of heat current in Corbino geometry
• Giant magnetoresistance in weakly disordered non-Galilean invariant conductors
• Thermoelectric cooling properties of a quantum Hall Corbino device
• Thermoelectric properties of the Corbino disk in graphene
• Controlled generation and detection of a thermal bias in Corbino devices under the quantum Hall regime
• Peltier cooling in Corbino-geometry quantum Hall systems