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Refrigeration effect in a single-level quantum dot with thermal bias
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View: Figures


Image of FIG. 1.
FIG. 1.

Schematic plot of a quantum dot with a single discrete level coupled to the electron and phonon reservoirs. The temperatures of the left and the right electron reservoirs are individually . The temperature of the phonon reservoir is fixed at the equilibrium temperature .

Image of FIG. 2.
FIG. 2.

The heat generation (a) and the electron current (b) as functions of the dot level for fixed equilibrium temperature and different values of . The properties of the Fermi functions and the transmission coefficients are shown in (c) and (d) with given parameters. The inset in (c) is the thermal bias windows and , and the inset in (d) is the product of and . The line-width functions are . The electron-phonon coupling strength is fixed at .

Image of FIG. 3.
FIG. 3.

(a) Heat generation as a function of with . (b) Heat generation vs with and different values of .

Image of FIG. 4.
FIG. 4.

(a) Electric bias induced by the thermal bias under the condition of I = 0 for different values of the equilibrium temperature , (b) the associated heat generation. Other parameters are .


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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Refrigeration effect in a single-level quantum dot with thermal bias