Abstract
Emission of phonons of energy h{stroke}ω≥2Δ from a self coupled Josephson tunnelling into its substrate was observed. The quantum efficiency varies with the voltage applied to the junction and shows abrupt changes at the "subharmonic" voltages.
Original language | English |
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Pages (from-to) | 379-380 |
Number of pages | 2 |
Journal | Physics Letters, Section A: General, Atomic and Solid State Physics |
Volume | 36 |
Issue number | 5 |
DOIs | |
State | Published - 27 Sep 1971 |
Externally published | Yes |