Magnetic field suppression of 3He superfluidity in aerogel

D. T. Sprague; T. M. Haard; J. B. Kycia; M. R. Rand; Y. Lee; W. P. Halperin

doi:10.1007/BF02569475

Magnetic field suppression of ³He superfluidity in aerogel

D. T. Sprague, T. M. Haard, J. B. Kycia, M. R. Rand, Y. Lee, W. P. Halperin

Physics and Astronomy

Research output: Contribution to journal › Article › peer-review

Abstract

We report nuclear magnetic resonance (NMR) measurements of superfluid ³He confined in 98% porosity aerogel.* ³He superfluidity in aerogel has been identified as an equal-spin pairing superfluid with a transition temperature, Te, suppressed from that of the bulk. In magnetic fields, 0.38 ≤ H ≤ 2.2 kOe, T_c is further suppressed by 61 ± 1 μK/kOe² at 18.7 bar. Such a quadratic magnetic field dependence of the superfluid transition is unexpected for an equal-spin pairing state. The effects of small additions of ⁴He on the NMR frequency shifts and on the phase diagram are described.

Original language	English (US)
Pages (from-to)	119-120
Number of pages	2
Journal	Czechoslovak Journal of Physics
Volume	46
Issue number	SUPPL. 1
DOIs	https://doi.org/10.1007/BF02569475
State	Published - 1996

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General Physics and Astronomy

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title = "Magnetic field suppression of 3He superfluidity in aerogel",

abstract = "We report nuclear magnetic resonance (NMR) measurements of superfluid 3He confined in 98% porosity aerogel.* 3He superfluidity in aerogel has been identified as an equal-spin pairing superfluid with a transition temperature, Te, suppressed from that of the bulk. In magnetic fields, 0.38 ≤ H ≤ 2.2 kOe, Tc is further suppressed by 61 ± 1 μK/kOe2 at 18.7 bar. Such a quadratic magnetic field dependence of the superfluid transition is unexpected for an equal-spin pairing state. The effects of small additions of 4He on the NMR frequency shifts and on the phase diagram are described.",

author = "Sprague, {D. T.} and Haard, {T. M.} and Kycia, {J. B.} and Rand, {M. R.} and Y. Lee and Halperin, {W. P.}",

year = "1996",

doi = "10.1007/BF02569475",

language = "English (US)",

volume = "46",

pages = "119--120",

journal = "Czechoslovak Journal of Physics",

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TY - JOUR

T1 - Magnetic field suppression of 3He superfluidity in aerogel

AU - Sprague, D. T.

AU - Haard, T. M.

AU - Kycia, J. B.

AU - Rand, M. R.

AU - Lee, Y.

AU - Halperin, W. P.

PY - 1996

Y1 - 1996

N2 - We report nuclear magnetic resonance (NMR) measurements of superfluid 3He confined in 98% porosity aerogel.* 3He superfluidity in aerogel has been identified as an equal-spin pairing superfluid with a transition temperature, Te, suppressed from that of the bulk. In magnetic fields, 0.38 ≤ H ≤ 2.2 kOe, Tc is further suppressed by 61 ± 1 μK/kOe2 at 18.7 bar. Such a quadratic magnetic field dependence of the superfluid transition is unexpected for an equal-spin pairing state. The effects of small additions of 4He on the NMR frequency shifts and on the phase diagram are described.

AB - We report nuclear magnetic resonance (NMR) measurements of superfluid 3He confined in 98% porosity aerogel.* 3He superfluidity in aerogel has been identified as an equal-spin pairing superfluid with a transition temperature, Te, suppressed from that of the bulk. In magnetic fields, 0.38 ≤ H ≤ 2.2 kOe, Tc is further suppressed by 61 ± 1 μK/kOe2 at 18.7 bar. Such a quadratic magnetic field dependence of the superfluid transition is unexpected for an equal-spin pairing state. The effects of small additions of 4He on the NMR frequency shifts and on the phase diagram are described.

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JO - Czechoslovak Journal of Physics

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Magnetic field suppression of ³He superfluidity in aerogel

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