Observation of Supercurrent Drag between Normal Metal and Superconducting Films
Xiaokang Huang, Greg Bazàn, Gary H. Bernstein
DOI 10.1103/PhysRevLett.74.4051 · Physical Review Letters
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Abstract
We experimentally investigate the Coulomb interaction between normal metal (Au /Ti) and superconducting (AlO x) 2D films separated by an insulating (Al2O3) layer. We report here the observation of supercurrent drag predicted by Duan and Yip [Phys. Rev. Lett. 70, 3647 (1993)]. The drag was observed at temperatures close to Tc, with the ratio of the drag current to the drive current as high as about 1×10−3. Our results are discussed in terms of a model of Coulomb mutual scattering between the normal electrons in the drive wire and the superelectrons in the drag wire.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| AlOx Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 1.99 | Pressure not reported | midpoint |
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