Rectification of electronic heat current by a hybrid thermal diode

Abstract

We report the realization of an ultra-efficient low-temperature hybrid heat current rectifier, thermal counterpart of the well-known electric diode. Our design is based on a tunnel junction between two different elements: a normal metal and a superconducting island. Electronic heat current asymmetry in the structure arises from large mismatch between the thermal properties of these two. We demonstrate experimentally temperature differences exceeding $60$ mK between the forward and reverse thermal bias configurations. Our device offers a remarkably large heat rectification ratio up to $\sim 140$ and allows its prompt implementation in true solid-state thermal nanocircuits and general-purpose electronic applications requiring energy harvesting or thermal management and isolation at the nanoscale.

8 pages, 6 color figures

References in corpus (8)

• Thermal memory: a storage of phononic information
• Single-mode heat conduction by photons
• The Josephson heat interferometer
• Quantum dot as thermal rectifier
• Sufficient conditions for thermal rectification in hybrid quantum structures
• Recombination limited energy relaxation in a BCS superconductor
• A normal metal tunnel-junction heat diode
• Electron energy relaxation by phonons in the Kondo condensate

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• Superconducting quantum refrigerator: Breaking and rejoining Cooper pairs with magnetic field cycles
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• Highly efficient phase-tunable photonic thermal diode
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• Magnus Induced Diode Effect for Skyrmions in Channels with Periodic Potentials
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• Hysteresis and effective reciprocity breaking due to current-induced forces
• Heat Transport Hysteresis Generated through Frequency Switching of a Time-Dependent Temperature Gradient
• Nonequilibrium thermal transport and photon squeezing in a quadratic qubit-resonator system
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