Popis: |
Double tunnel junctions S/sub 1/-S/sub 2/-S/sub 3/ (Al-Al-Pb:Bi, mounted on sapphire substrates in vacuum) have been used to measure the inelastic (tau/sub i/) and elastic (tau/sub e/) scattering times in the center Al film (T/sub c/=1.28 K). The current peak at V/sub d/1= +- (such thatub g/..delta../sub 1/-..delta../sub 3/)/e) and the current step at V/sub d/2= +- (such thatub g/..delta../sub 1/+..delta../sub 3/)/e) provide complementary data on tau/sub i/(E,T*) and tau/sub e/(E,T*) in S/sub 2/ over the energy range 1.5..delta..(0) |