Absorption refrigerators based on Coulomb-coupled single-electron systems

Paolo Andrea Erdman, Bibek Bhandari, Rosario Fazio, Jukka P. Pekola, Fabio Taddei

Research output: Contribution to journalArticleScientificpeer-review

32 Citations (Scopus)
179 Downloads (Pure)


We analyze a simple implementation of an absorption refrigerator, a system that requires heat and not work to achieve refrigeration, based on two Coulomb-coupled single-electron systems. We analytically determine the general condition to achieve cooling-by-heating, and we determine the system parameters that simultaneously maximize the cooling power and cooling coefficient of performance (COP) finding that the system displays a particularly simple COP that can reach Carnot's upper limit. We also find that the cooling power can be indirectly determined by measuring a charge current. Analyzing the system as an autonomous Maxwell demon, we find that the highest efficiencies for information creation and consumption can be achieved, and we relate the COP to these efficiencies. Finally, we propose two possible experimental setups based on quantum dots or metallic islands that implement the nontrivial cooling condition. Using realistic parameters, we show that these systems, which resemble existing experimental setups, can develop an observable cooling power.

Original languageEnglish
Article number045433
Pages (from-to)1-10
JournalPhysical Review B
Issue number4
Publication statusPublished - 31 Jul 2018
MoE publication typeA1 Journal article-refereed


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