TY - JOUR
T1 - Brownian refrigeration by hybrid tunnel junctions
AU - Peltonen, J.T.
AU - Helle, Meri
AU - Timofeev, A.V.
AU - Solinas, P.
AU - Hekking, F.W.
AU - Pekola, J.P.
PY - 2011/10/4
Y1 - 2011/10/4
N2 - 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.
AB - 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.
KW - Brownian refrigeration
KW - hybrid tunnel junctions
KW - Brownian refrigeration
KW - hybrid tunnel junctions
KW - Brownian refrigeration
KW - hybrid tunnel junctions
UR - http://dx.doi.org/10.1103/PhysRevB.84.144505
U2 - 10.1103/PhysRevB.84.144505
DO - 10.1103/PhysRevB.84.144505
M3 - Article
VL - 84
SP - 1
EP - 14
JO - Physical Review B (Condensed Matter and Materials Physics)
JF - Physical Review B (Condensed Matter and Materials Physics)
SN - 2469-9950
IS - 14
M1 - 144505
ER -