Research output: Contribution to Journal/Magazine › Letter › peer-review
<mark>Journal publication date</mark> | 1996 |
---|---|
<mark>Journal</mark> | Journal of Physics: Condensed Matter |
Issue number | 4 |
Volume | 8 |
Number of pages | 6 |
Pages (from-to) | L45-L50 |
Publication Status | Published |
<mark>Original language</mark> | English |
When two superconducting contacts are made on either side of a mesoscopic normal wire, the electrical conductance is a periodic function of the phase difference between the superconductors. For this structure, the oscillation at zero voltage and zero temperature is a small mesoscopic effect, with an amplitude of order e(2)/h. In contrast, we predict that a finite bias voltage V will induce giant oscillations associated with the classical proximity effect. These are a finite fraction of the overall conductance, exhibit a maximum when eV equals the Thouless energy, and decrease at higher voltages. This effect may account for the large-amplitude oscillations measured in recent experiments by Petrashov et al.