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.
|Journal||Physica B: Physics of Condensed Matter|
|Publication status||Published - 2 Feb 1994|
|Event||20th International Conference on Low Temperature Physics, LT-20 1993 - Eugene, United States|
Duration: 4 Aug 1993 → 11 Aug 1993
Conference number: 20