Charge transport and Zener tunneling in small Josephson junctions with dissipation
L. S. Kuzmin, Yu. A. Pashkin, D. S. Golubev, A. D. Zaikin
DOI 10.1103/PhysRevB.54.10074 · Physical Review B
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Abstract
We have investigated a small-area Josephson tunnel junction in a superconducting quantum interference device (SQUID) geometry, biased through high-resistance thin-film leads. This configuration provides the necessary conditions for the observation of charging effects. The Josephson coupling energy EJ was varied by an external magnetic flux introduced into a SQUID loop. The current-voltage characteristics of the system were measured at low temperatures T∼80 mK and different values of EJ. At a certain value of the current the Zener tunneling rate exceeds that of the dissipative relaxation and the system ‘‘jumps’’ from the lowest to higher Brillouin zones. This corresponds to a crossover on the I-V curve. The crossover current Icr was measured as a function of EJ. Good agreement between our data and a theory of Zener tunneling with dissipation has been found. © 1996 The American Physical Society.
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 |
| Pb Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
| Au 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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