Comparative study of heat-driven and power-driven refrigerators with Coulomb-coupled quantum dots

Abstract

Multi-terminal multi-dot devices have been put forward as versatile and performant setups for thermoelectric energy harvesting at the nanoscale. With a technique that encompasses and overtakes several of the usual theoretical tools used in this context, we explore a three-terminal Coulomb-coupled-dot device for refrigeration purposes. The refrigerator is monitored by either a voltage or a thermal bias. This comparative study shows that heat driven refrigerator is much underperforming than the power driven one, due to scarce on-dot charge fluctuations.

10 pages, 7 figures

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Cited by in corpus (5)

• Nonlocal quantum heat engines made of hybrid superconducting devices
• Superconductor-quantum dot hybrid coolers
• A realistic non-local heat engine based on Coulomb coupled systems
• Phase-controlled heat modulation with Aharonov-Bohm interferometers
• Role of asymmetry in thermoelectric properties of a double quantum dot out of equilibrium