High-frequency conductivity of superconducting gallium according to ultrasonic data
В. И. ДенисенкоPhysicotechnical Institute of Low Temperatures, Academy of Sciences of the Ukrainian SSR, Khar’kovV. D. FilPhysicotechnical Institute of Low Temperatures, Academy of Sciences of the Ukrainian SSR, Khar’kovE. A. MasalitinPhysicotechnical Institute of Low Temperatures, Academy of Sciences of the Ukrainian SSR, Khar’kovП. А. БезуглыйPhysicotechnical Institute of Low Temperatures, Academy of Sciences of the Ukrainian SSR, Khar’kov
ABI
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The high-frequency conductivity of superconducting gallium near the transition temperature is determined from measurements of the complex propagation constant of linearly polarized transverse sound. It is shown that the normalized complex conductivity in the investigated frequency range (50–250 MHz) is practically independent of the frequency, and its temperature variation is consistent with the theoretical calculations.
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