Heat diode and engine based on quantum Hall edge states

Abstract

We investigate charge and energy transport in a three-terminal quantum Hall conductor. The peculiar properties of chiral propagation along the edges of the sample have important consequences on the response to thermal biases. Based on the separation of charge and heat flows, thermoelectric conversion and heat rectification can be manipulated by tuning the scattering at gate-modulated constrictions. Chiral motion in a magnetic field allows for a different behaviour of left- and right-moving carriers giving rise to thermal rectification by redirecting the heat flows. We propose our system both as an efficient heat-to-work converter and as a heat diode.

19 pages, 8 figures

References in corpus (13)

• Quantum limit of heat flow across a single electronic channel
• The thermopower and Nernst Effect in graphene in a magnetic field
• Optimal energy quanta to current conversion
• Quantum dot as thermal rectifier
• Powerful and efficient energy harvester with resonant-tunneling quantum dots
• Magnon-driven quantum-dot heat engine
• Chiral thermoelectrics with quantum Hall edge states
• Single-electron heat diode
• Enhanced performance of joint cooling and energy production
• Generating and controlling spin-polarized currents induced by a quantum spin Hall antidot
• Spin-dependent thermoelectric transport in HgTe/CdTe quantum wells
• Thermoelectric Corrections to Quantum Voltage Measurement
• Thermoelectric effects in quantum Hall systems beyond linear response