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Heat diode and engine based on quantum Hall edge states
Rafael Sánchez (Instituto de Ciencia de Materiales de Madrid), Björn Sothmann (University of Geneva), Andrew N Jordan (Chapman University, University of Rochester)
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 behavior 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.