Volume 117, Number 5, March 2017
|Number of page(s)||4|
|Section||Condensed Matter: Electronic Structure, Electrical, Magnetic and Optical Properties|
|Published online||08 May 2017|
Damping in a superconducting mechanical resonator
Andrew and Erna Viterbi Department of Electrical Engineering, Technion - Haifa 32000, Israel
Received: 22 February 2017
Accepted: 19 April 2017
We study a mechanical resonator made of aluminum near the normal-to-superconducting phase transition. A sharp drop in the rate of mechanical damping is observed below the critical temperature. The experimental results are compared with predictions based on the Bardeen Cooper Schrieffer theory of superconductivity and a fair agreement is obtained.
PACS: 74.25.Ld – Mechanical and acoustical properties, elasticity, and ultrasonic attenuation / 46.40.-f – Vibrations and mechanical waves
© EPLA, 2017
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