Produção Nacional
Revisado por pares
Two coupled double quantum-dot systems as a working substance for heat machines
2021; American Physical Society; Volume: 104; Issue: 1 Linguagem: Inglês
10.1103/physreve.104.014149
ISSN2470-0061
AutoresJefferson Luan Diniz de Oliveira, Moisés Rojas, Cleverson Filgueiras,
Tópico(s)Quantum and electron transport phenomena
ResumoThis paper presents a conceptual design for quantum heat machines using a pair of coupled double quantum dots (DQDs), each DQD with an excess electron to interact, as an working substance. We define a compression ratio as the ratio between the Coulomb couplings which describes the interaction between the electrons during the isochoric processes of the quantum Otto cycle and then we analyse the arising of different regimes of operations of our thermal machine. We also show how we can achieve a classically inconceivable Otto engine, when considering the effects due to the parameters related to the quantum tunneling of a single electron between each individual DQD.
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