Mg. Castellano et al., CHARACTERISTICS OF SUPERCONDUCTOR-INSULATOR-NORMAL TUNNEL-JUNCTIONS FOR ON-CHIP ELECTRONIC REFRIGERATION, Nuovo cimento della Societa italiana di fisica. D, Condensed matter,atomic, molecular and chemical physics, biophysics, 19(8-9), 1997, pp. 1417-1422
In this paper ave discuss some points concerning the design of an on-c
hip electronic refrigerator based on low-resistance tunnel junctions.
We describe our Nb/AlOx/Cu (SIN) and Nb/AlOx/Cu/Al (SINS') junctions a
nd we report on the measurements of their I-V characteristics between
10 K and 0.3 K, showing that the junctions of the first type are suita
ble for the refrigerator fabrication.