Brownian refrigeration by hybrid tunnel junctions

J.T. Peltonen, Meri Helle, A.V. Timofeev, P. Solinas, F.W. Hekking, J.P. Pekola

Tutkimustuotos: LehtiartikkeliArticleScientificvertaisarvioitu

8 Sitaatiot (Scopus)
105 Lataukset (Pure)

Abstrakti

Voltage fluctuations generated in a hot resistor can cause extraction of heat from a colder normal metal electrode of a hybrid tunnel junction between a normal metal and a superconductor. We extend the analysis presented in Phys. Rev. Lett. 98, 210604 (2007) of this heat rectifying system, bearing resemblance to a Maxwell’s demon. Explicit analytic calculations show that the entropy of the total system is always increasing. We then consider a single-electron transistor configuration with two hybrid junctions in series, and show how the cooling is influenced by charging effects. We analyze also the cooling effect from nonequilibrium fluctuations instead of thermal noise, focusing on the shot noise generated in another tunnel junction. We conclude by discussing limitations for an experimental observation of the effect.
AlkuperäiskieliEnglanti
Artikkeli144505
Sivut1-14
Sivumäärä14
JulkaisuPhysical Review B
Vuosikerta84
Numero14
DOI - pysyväislinkit
TilaJulkaistu - 4 lokakuuta 2011
OKM-julkaisutyyppiA1 Julkaistu artikkeli, soviteltu

Tutkimusalat

  • Brownian refrigeration
  • hybrid tunnel junctions

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