Observation of the Bloch oscillations in an ultrasmall Josephson junction
L. S. Kuzmin, D. B. Haviland
DOI 10.1103/PhysRevLett.67.2890 · Physical Review Letters
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Abstract
We have studied the low-temperature behavior of lead-alloy Josephson tunnel junctions with area S≊0.01 μm2, isolated from their electromagnetic environment by high-resistance metallic resistors inserted into the current and voltage leads. Under irradiation with microwaves frequencies, f=3.5–10 GHz, the dc differential resistance dV/dI, as a function of the dc current I, showed peaks at I=±2ef. This effect, and other observations, arises due to the periodic electrical recharging of the junction by discrete Cooper pairs, and can be explained by the ‘‘orthodox’’ theory of Bloch oscillations.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| CrPbAuIn/PbAu 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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