Observation of Andreev reflection in all-superconducting single-electron transistors
R. J. Fitzgerald, S. L. Pohlen, M. Tinkham
DOI 10.1103/PhysRevB.57.R11073 · Physical Review B
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Abstract
We present the first experimental evidence for Andreev reflection in a single-electron transistor with both the leads and the island superconducting. In this process, two electrons tunnel to form a Cooper pair, or the reverse. It provides a second mechanism for two-electron transfer in addition to Cooper pair tunneling. Andreev reflection is found to contribute to several current cycles within the Coulomb blockade of single-electron tunneling. The observation of these cycles, however, requires that the charging energy EC<Δ.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Al Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
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