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Chainer, Timothy; Morii, Yukio; Kojima, H.

doi:10.1103/physrevb.21.3941

Cited by 17 publications

(37 citation statements)

References 8 publications

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“…At temperatures below about one-tenth of the Fermi temperature T F ͑which is about 1 K in 3 He͒, the static and dynamic properties of liquid 3 He in its normal-fluid phase are well described by the phenomenological Landau Fermiliquid theory. 1 In this temperature range, 3 He may be treated as a degenerate Fermi liquid, and the interaction among the 3 He quasiparticles is described by the so-called Fermi-liquid parameters, which have to be derived from experiment.…”

Section: Introductionmentioning

confidence: 92%

“…1 In this temperature range, 3 He may be treated as a degenerate Fermi liquid, and the interaction among the 3 He quasiparticles is described by the so-called Fermi-liquid parameters, which have to be derived from experiment. The temperature dependences predicted by Landau's Fermiliquid theory for the specific heat (CϳT), thermal conductivity (ϳT Ϫ1 ), spin diffusion (DϳT Ϫ2 ), and viscosity (ϳT Ϫ2 ) of liquid 3 He in the degenerate regime result from the fermionic nature of the 3 He quasiparticles and the Pauli exclusion principle for scattering of spin- 1 2 particles around the Fermi sphere. 2 In particular, the dynamic properties of liquid 3 He with their distinct temperature dependences are very sensitive tools for studying the interaction among 3 He quasiparticles and for providing information about the Fermi-liquid parameters in the degenerate regime.…”

Section: Introductionmentioning

confidence: 99%

“…The Landau Fermi-liquid theory predicts a specific heat of normal-fluid 3 He that is linearly dependent on temperature in the degenerate regime. The coefficient of the specific heat is proportional to the effective mass m 3 * of the 3 He quasiparticles, which is a measure of the interaction between the 3 He quasiparticles and is therefore strongly dependent on the pressure the sample is exposed to.…”

Section: Introductionmentioning

confidence: 99%

“…The coefficient of the specific heat is proportional to the effective mass m 3 * of the 3 He quasiparticles, which is a measure of the interaction between the 3 He quasiparticles and is therefore strongly dependent on the pressure the sample is exposed to. The quasiparticle interaction, in turn, may be influenced by different length scales, depending on whether 3 He is in its normal-fluid or in its superfluid state.…”

Section: Introductionmentioning

confidence: 99%

“…The dominating length scale for the quasiparticle interaction in normal-fluid 3 He is given by the mean free path of the 3 He quasiparticles. According to Landau's theory of Fermi liquids, follows a T Ϫ2 law in the degenerate regime; its magnitude is of the order of ϳ0.1 m at about 30 mK and increases to almost 100 m at Tϭ1 mK.…”

Section: Introductionmentioning

confidence: 99%

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Specific heat of liquid3Heunder pressure in a restricted geometry

Schrenk

König

1998

Phys. Rev. B

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We have investigated the specific heat of liquid 3 He confined to an Ag sinter with an average pore size of about 1000 Å in the temperature range 1 mKрTр20 mK and at pressures 4.8 barр pр34.0 bar. The specific heat of normal-fluid 3 He in the sinter pores shows the linear temperature dependence expected for a Fermi liquid. However, the effective mass of the 3 He quasiparticles is clearly enhanced in the restricted geometry compared to data obtained in bulk 3 He. In addition, there is a temperature-independent contribution to the specific heat, the origin of which can be interpreted as the specific heat of the second layer of 3 He on the Ag surface. Moreover, compared with the results obtained for bulk 3 He, we observe a much broader maximum in the specific heat in the vicinity of the superfluid transition; this maximum occurs about 0.4 mK below the bulk superfluid transition temperature. Furthermore, in the confinement of the sinter only a part of the 3 He in the sinter ͑about 60%͒ becomes superfluid. In contrast to the results obtained with pure 3 He the specific heat of a liquid 3 He-4 He mixture ͑1% 3 He͒ in the Ag sinter shows no deviation from bulk data.

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Section: Introductionmentioning

confidence: 92%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Specific heat of liquid3Heunder pressure in a restricted geometry

Schrenk

König

1998

Phys. Rev. B

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Fluctuations in small volumes of liquid 3He

Efetov

Salomaa

1981

J Low Temp Phys

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We calculate fluctuation contributions to the thermodynamic properties in a small volume of liquid 3He. Functional integration techniques are employed to derive the fluctuation free-energy functional for temperatures just above the superfluid transition temperature and for zero temperature. Due to finite-size effects, the critical regime is estimated to be large enough to warrant an experimental observation of fluctuations. At zero temperature we find two kinds of quasicollective gapless excitations, which correspond to fluctuations of phase and rotations of the order parameter in spin space, respectively. These excitations result in a periodic time dependence of the pair correlation function. Finally, the experimental observability of the effects considered are contemplated.

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