Broadband Frequency Study of the Zero Sound Attenuation near the Quantum Limit in Normal Liquid 3He close to the Superfluid Transition

G. E. Granroth; N. Masuhara; G. G. Ihas; M. W. Meisel

doi:10.1023/a:1022576817674

Broadband Frequency Study of the Zero Sound Attenuation near the Quantum Limit in Normal Liquid ³He close to the Superfluid Transition

G. E. Granroth, N. Masuhara, G. G. Ihas, M. W. Meisel

Direct Geometry

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Abstract

The zero sound attenuation, α₀(ω, T, P), of normal liquid ³He has been studied over a broad range of frequency (ω/2π = 8 - 50 MHz). Data has been collected at a constant temperature (T ≈ 1.1 mK) which is just above the superfluid transition temperature, T_c, when the liquid is near a pressure, P, of 1 bar. The results are compared to Landau's prediction in the quantum limit, k_BT « (Latin small letter h with stroke)ω « k_BT_F, where α₀(ω, T, P) = α′(P) T²[1 + ((Latin small letter h with stroke)ω/2πk_BT)²]. Deviations from Landau's prediction are compared to the results of other workers and are discussed with respect to additional (unidentified) extrinsic background effects and (possible) intrinsic scattering mechanisms due to fluctuations in the liquid.

Original language	English
Pages (from-to)	543-548
Number of pages	6
Journal	Journal of Low Temperature Physics
Volume	113
Issue number	3-4
DOIs	https://doi.org/10.1023/a:1022576817674
State	Published - 1998

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title = "Broadband Frequency Study of the Zero Sound Attenuation near the Quantum Limit in Normal Liquid 3He close to the Superfluid Transition",

abstract = "The zero sound attenuation, α0(ω, T, P), of normal liquid 3He has been studied over a broad range of frequency (ω/2π = 8 - 50 MHz). Data has been collected at a constant temperature (T ≈ 1.1 mK) which is just above the superfluid transition temperature, Tc, when the liquid is near a pressure, P, of 1 bar. The results are compared to Landau's prediction in the quantum limit, kBT « (Latin small letter h with stroke)ω « kBTF, where α0(ω, T, P) = α′(P) T2[1 + ((Latin small letter h with stroke)ω/2πkBT)2]. Deviations from Landau's prediction are compared to the results of other workers and are discussed with respect to additional (unidentified) extrinsic background effects and (possible) intrinsic scattering mechanisms due to fluctuations in the liquid.",

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T1 - Broadband Frequency Study of the Zero Sound Attenuation near the Quantum Limit in Normal Liquid 3He close to the Superfluid Transition

AU - Granroth, G. E.

AU - Masuhara, N.

AU - Ihas, G. G.

AU - Meisel, M. W.

PY - 1998

Y1 - 1998

N2 - The zero sound attenuation, α0(ω, T, P), of normal liquid 3He has been studied over a broad range of frequency (ω/2π = 8 - 50 MHz). Data has been collected at a constant temperature (T ≈ 1.1 mK) which is just above the superfluid transition temperature, Tc, when the liquid is near a pressure, P, of 1 bar. The results are compared to Landau's prediction in the quantum limit, kBT « (Latin small letter h with stroke)ω « kBTF, where α0(ω, T, P) = α′(P) T2[1 + ((Latin small letter h with stroke)ω/2πkBT)2]. Deviations from Landau's prediction are compared to the results of other workers and are discussed with respect to additional (unidentified) extrinsic background effects and (possible) intrinsic scattering mechanisms due to fluctuations in the liquid.

AB - The zero sound attenuation, α0(ω, T, P), of normal liquid 3He has been studied over a broad range of frequency (ω/2π = 8 - 50 MHz). Data has been collected at a constant temperature (T ≈ 1.1 mK) which is just above the superfluid transition temperature, Tc, when the liquid is near a pressure, P, of 1 bar. The results are compared to Landau's prediction in the quantum limit, kBT « (Latin small letter h with stroke)ω « kBTF, where α0(ω, T, P) = α′(P) T2[1 + ((Latin small letter h with stroke)ω/2πkBT)2]. Deviations from Landau's prediction are compared to the results of other workers and are discussed with respect to additional (unidentified) extrinsic background effects and (possible) intrinsic scattering mechanisms due to fluctuations in the liquid.

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Broadband Frequency Study of the Zero Sound Attenuation near the Quantum Limit in Normal Liquid ³He close to the Superfluid Transition

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