Phys. Rev. Lett. 66, 329–332 (1991)Observation of quantized circulation in superfluid 3BSee Also: Erratum Received 19 November 1990; published in the issue dated 21 January 1991 We report the first observation of quantized circulation in superfluid 3B. The apparatus consists of a straight vibrating wire immersed in liquid 3He, which is cooled by a rotating nuclear demagnetization cryostat. The experiment is carried out at about 250 μK. The superfluid at this temperature is in the ballistic quasiparticle regime. Circulation around the wire is found to be stable only when it takes on the values -h/2m3, 0, and +h/2m3, where h is Planck’s constant and m3 is the mass of the 3He atom. This experiment confirms that superfluid 3B is a Cooper-paired superfluid with a macroscopic quantum wave function. © 1991 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.66.329
DOI:
10.1103/PhysRevLett.66.329
PACS:
67.50.Fi, 67.40.Vs
See AlsoErratum: J. C. David, J. D. Close, R. Zieve, and R. E. Packard, Erratum: Observation of quantized circulation in superfluid 3B [Phys. Rev. Lett. 66, 329 (1991)], Phys. Rev. Lett. 66, 1801 (1991). |
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