A superfluid gyrometer: quantized currents and fractional trapped circulation

R. Aarts, G.G. Ihas, O. Avenel, E. Varoquaux

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A detailed analysis of phase-slip observations in superfluid4He in a double-hole hydromechanical resonator fitted with a micro-aperture yields the remanent current trapped in the superfluid loop threading the two holes. The value of this bias current remains constant in each given cool-down below the λ point. Its value at each cool-down appears to be fixed at random. It can be determined to about a hundredth of the circulation quantum. This is the present practical resolution of the double-hole resonator used as an absolute gyrometer.
Original languageEnglish
Pages (from-to)493-494
JournalPhysica B: Physics of Condensed Matter
Issue number1
Publication statusPublished - 2 Feb 1994
Externally publishedYes
Event20th International Conference on Low Temperature Physics, LT-20 1993 - Eugene, United States
Duration: 4 Aug 199311 Aug 1993
Conference number: 20


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