Shear Viscosity of Superfluid<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msup><mml:mrow /><mml:mrow><mml:mn>3</mml:mn></mml:mrow></mml:msup></mml:mrow><mml:mi>He</mml:mi></mml:math>up to 15 Tesla

Roobol, L. P.; Remeijer, P.; Steel, Stephen C.; Jochemsen, R.; Shumeiko, Vitaly; Frossati, G.

doi:10.1103/physrevlett.79.685

Cited by 98 publications

(16 citation statements)

References 24 publications

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“…The shear viscosity, in the presence of low magnetic field, has been measured by Alvesalo et al [16]. A number of viscosity measurements have been carried out in the A 1 and A 2 phases of superfluid He 3 at different high magnetic fields by Roobol et al [18][19][20]. All the results show a sharp decrease proportional to the opening of the superfluid energy gap, ∆ ∝ ( 1-T/T c ) T for low temperatures.…”

Section: Introductionmentioning

confidence: 99%

Shear viscosity of superfluid 3He–A1 at low temperatures

Shahzamanian

Afzali

2004

Annals of Physics

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Section: Introductionmentioning

confidence: 99%

Shear viscosity of superfluid 3He–A1 at low temperatures

Shahzamanian

Afzali

2004

Annals of Physics

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“…The measurement of shear viscosity with vibrating wire techniques 6) was extended as shown in Fig. 2 by the Leiden group 16) in fields up to 15 T at the melting pressure using a glass capacitance thermometer.…”

Section: Shear Viscositymentioning

confidence: 99%

“…15) How the inevitable departure from the linearity in the phase width with field will appear is of great interest in both experimental and theoretical studies. 16,17) The highest steady magnetic field under which the superfluid A 1 phase been studied to date is 15 T. 16) This corresponds to a mere 6% spin polarization in the normal liquid at the melting pressure. On the other hand, a very high polarization, equivalent to 200 T field, has been achieved in normal liquid near 90 mK by rapid melting techniques.…”

Section: Introductionmentioning

confidence: 99%

Spin Polarized Superfluid³He A₁

Kojima

Ishimoto

2008

J. Phys. Soc. Jpn.

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Under applied magnetic field, the originally single superfluid 3 He transition near 3 mK in zero field splits into two transitions between which a new A 1 phase emerges. The two second order transitions are marked by abrupt changes in viscosity, zero sound attenuation and nuclear magnetic resonance. To date, the maximum magnetic field for producing A 1 phase is 15 T. The A 1 phase has been identified with a spin-polarized (ferromagnetic) superfluid system which breaks the relative symmetry between spin, orbit and gauge spaces. A superfluid mass current in A 1 is simultaneously a spin current resulting in the propagation of spin-entropy wave. Experiments with spin-entropy wave provide measurements of anisotropic superfluid density and strong coupling parameters, spin diffusion coefficient and texture transformations. Owing to the spin-polarized nature, superflows may be generated by applied magnetic field gradients and measured from the induced magnetic fountain pressure. The mechanical spin density detector is developed to measure the spin relaxation in A 1 phase. The observed unexpected temperature dependence of the spin relaxation time gives evidence that the A 1 phase contains a small amount of the predicted minority spin condensate from dipolar interaction energy.KEYWORDS: spin-polarized system, superfluid 3 He, magnetic fountain effect, spin pump, second sound, high magnetic field

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“…Therefore Pfitzner procedure improves other mentioned approximations. Roobol et al [9] proposed ( )( ) calculations, whereas we use Pfitzner procedure. The minor discrepancy between our prefactor of η and Roobol et al's, 0.473, arises mainly from improving the calculation of singlet and triplet QSA via Pfitzner procedure by us.…”

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confidence: 99%