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Synchronization of high-frequency oscillations of phase-slip centers in a tin whisker under microwave radiation

V. I. Kuznetsov·V. A. Tulin
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Abstract

Current-voltage characteristics of a system with a variable number of phase-slip centers resulting from phase separation in a tin whisker under external microwave field with a frequency Ω/2π\=35-45 GHz have been studied experimentally. Emergence and disappearance of steps with zero slope in a whisker's current-voltage characteristic at U_{m/n}=(m/n)U_Ω, where m and n are integers and U_Ω is determined by Josephson's formula \hbarΩ=2eU_Ω, have been investigated. Microwave field generated by phase-slip centers is nonharmonic, and the system of phase-slip centers permits synchronization of internal oscillations at a microwave frequency by an external field with a frequency which is the n-th harmonic of internal oscillations. The estimated microwave power generated by a whisker is 10^{-8} W. Stimulation of superconductivity in a current-carrying whisker has been detected.

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V. I. Kuznetsov, V. A. Tulin. 2004-07-17. Synchronization of high-frequency oscillations of phase-slip centers in a tin whisker under microwave radiation. https://doi.org/10.1134/1.558535

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