Synchronization of high-frequency vibrations of slipping phase centers in a tin whisker under microwave radiation |
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Authors: | V I Kuznetsov V A Tulin |
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Institution: | (1) Russian Academy of Sciences, 142432 Chernogolovka, Moscow Region, Russia |
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Abstract: | Current-voltage characteristics of a system with a variable number of slipping phase 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 ℏΩ=2eU
Ω, have been investigated. Microwave field generated by slipping phase centers is nonharmonic, and the system of slipping phase
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.
Zh. éksp. Teor. Fiz. 113, 1364–1375 (April 1998) |
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Keywords: | |
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