2 research outputs found
Reply to the Comment of den Hartog and van Wees on "Conductance Fluctuations in Mesoscopic Normal-Metal/Superconductor Samples"
In their comment cond-mat/9710285 [Phys. Rev. Lett. 80, 5024 (1998)] den
Hartog and van Wees (HW) raise objections against our analysis of the
experimental data presented in cond-mat/9708162 [Phys. Rev. Lett. 79, 1547
(1997)]. According to HW, we did not account for the quantum phase incoherence
introduced by the Niobium compounds of the investigated Nb/Au hybrid samples.
Here we show that and why this criticism is not justified. Some difficulties
associated with a precise determination of the coherence lengths are discussed.
It is discussed why these uncertainties do not have a qualitative impact on the
results reported in our paper.Comment: Reply to the comment cond-mat/9710285 by den Hartog and van Wees; 1
page REVTE
Conductance fluctuations in mesoscopic normal-metal/superconductor samples
We study the magnetoconductance fluctuations of mesoscopic
normal-metal/superconductor (NS) samples consisting of a gold-wire in contact
with a niobium film. The magnetic field strength is varied over a wide range,
including values that are larger than the upper critical field B_c2 of niobium.
In agreement with recent theoretical predictions we find that in the NS sample
the rms of the conductance fluctuations (CF) is by a factor of 2.8 +/- 0.4
larger than in the high field regime where the entire system is driven normal
conducting. Further characteristics of the CF are discussed.Comment: 4 pages, REVTEX, 3 eps-figures included. To be published in Phys.
Rev. Lett.. Changes: one misplaced figure correcte