Non-Josephson Emission from Intrinsic Junctions in Bi2Sr2CaCu2O8+y: Cherenkov Radiation by Josephson Vortices
G. Hechtfischer, R. Kleiner, A. V. Ustinov, P. Müller
DOI 10.1103/PhysRevLett.79.1365 · Physical Review Letters
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Abstract
We have investigated Josephson vortex flow in intrinsic junctions in Bi2Sr2CaCu2O8+y. In addition to the Josephson radiation we find a strong broadband non-Josephson microwave emission which is not expected for conventional junctions. We explain this non-Josephson signal by Cherenkov radiation occurring when the vortex velocity exceeds the lowest of the N possible mode velocities for electromagnetic waves in an N junction stack.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Bi2Sr2CaCu2O8+y Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 87 | Pressure not reported | unknown |
| Bi2Sr2CaCu2O8+y Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 85 | Pressure not reported | unknown |
| Bi2Sr2CaCu2O8+y Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 86 | Pressure not reported | unknown |
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