Measurements of the Dipolar Velocity in Superfluid
                    <sup>3</sup>
                    He-B

Nummila, K. K.; Hakonen, Pertti; Magradze, O. V.

doi:10.1209/0295-5075/9/4/010

Cited by 49 publications

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“…present in the vortex-free state, gives rise to the free-energy term (7) where the dipolar critical velocity, uD = 0.30 mm s-l, is obtained by interpolation from recent measurements (Nummila et al 1989). The gradient free energy is given by where the parameter c = a H 2 ( $ , with the magnetic healing length tH3, for which I use the data of Hakonen er al (1989a); hence there are no free parameters in the present calculation.…”

Section: The Flare-in Texturementioning

confidence: 99%

The flare-in texture in rotating superfluid³He-B

Salomaa¹

1990

J. Phys.: Condens. Matter

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A new first-order phase transition is proposed to manifest itself in rotating 3He-B for the vortex-free state, owing to counterflow. The 'flare-out' texture is found to become spontaneously unstable towards a new 'flare-in' texture, which is suggested to explain the transition, first observedwith theuseofNMRby HakonenandNummilain 1987andconfirmed by Korhonen and co-workers in 1989, to a previously unidentified state characterised by a signalcorrespondingtop = 90",i.e.,withavectorriperpendiculartoH 11 Cl llz. Thistransition is also expected to be observable in other experiments, such as ones based on ultrasonic measurements, on the vortex-free state of rotating superfluid 3He-B, a new tenfold splitting of the real squashing mode is predicted to occur for the flare-in texture.

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Section: The Flare-in Texturementioning

confidence: 99%