Pressure dependence of the longitudinal resonance frequency of 3He superfluid phases in aerogel

J. I.A. Li; J. Pollanen; C. A. Collett; W. J. Gannon; W. P. Halperin

doi:10.1088/1742-6596/400/1/012039

Pressure dependence of the longitudinal resonance frequency of ³He superfluid phases in aerogel

J. I.A. Li, J. Pollanen, C. A. Collett, W. J. Gannon, W. P. Halperin

Research output: Contribution to journal › Conference article › peer-review

2 Scopus citations

Abstract

Pulsed NMR measurements have been performed on superfluid ³He within a 98% porosity aerogel over a pressure range of 8 to 26 bar. The aerogel sample is homogeneous and isotropic as indicated by in situ optical birefringence and, on similarly prepared samples, using SAXS characterization [1]. Two different superfluid phases are observed at low temperature. The two phases are identified as the same as the A and B-phases in pure ³He, from tip angle measurement and the NMR equations of Leggett [2]. The pressure and temperature dependence of the longitudinal resonance frequency of each phase is reported in this article.

Original language	English
Article number	012039
Journal	Journal of Physics: Conference Series
Volume	400
Issue number	PART 1
DOIs	https://doi.org/10.1088/1742-6596/400/1/012039
State	Published - 2012
Event	26th International Conference on Low Temperature Physics, LT 2011 - Beijing, China Duration: Aug 10 2011 → Aug 17 2011

Funding

Funders	Funder number
National Science Foundation (NSF)	1103625

ASJC Scopus subject areas

General Physics and Astronomy

Access to Document

10.1088/1742-6596/400/1/012039

Cite this

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title = "Pressure dependence of the longitudinal resonance frequency of 3He superfluid phases in aerogel",

abstract = "Pulsed NMR measurements have been performed on superfluid 3He within a 98\% porosity aerogel over a pressure range of 8 to 26 bar. The aerogel sample is homogeneous and isotropic as indicated by in situ optical birefringence and, on similarly prepared samples, using SAXS characterization [1]. Two different superfluid phases are observed at low temperature. The two phases are identified as the same as the A and B-phases in pure 3He, from tip angle measurement and the NMR equations of Leggett [2]. The pressure and temperature dependence of the longitudinal resonance frequency of each phase is reported in this article.",

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T1 - Pressure dependence of the longitudinal resonance frequency of 3He superfluid phases in aerogel

AU - Li, J. I.A.

AU - Pollanen, J.

AU - Collett, C. A.

AU - Gannon, W. J.

AU - Halperin, W. P.

PY - 2012

Y1 - 2012

N2 - Pulsed NMR measurements have been performed on superfluid 3He within a 98% porosity aerogel over a pressure range of 8 to 26 bar. The aerogel sample is homogeneous and isotropic as indicated by in situ optical birefringence and, on similarly prepared samples, using SAXS characterization [1]. Two different superfluid phases are observed at low temperature. The two phases are identified as the same as the A and B-phases in pure 3He, from tip angle measurement and the NMR equations of Leggett [2]. The pressure and temperature dependence of the longitudinal resonance frequency of each phase is reported in this article.

AB - Pulsed NMR measurements have been performed on superfluid 3He within a 98% porosity aerogel over a pressure range of 8 to 26 bar. The aerogel sample is homogeneous and isotropic as indicated by in situ optical birefringence and, on similarly prepared samples, using SAXS characterization [1]. Two different superfluid phases are observed at low temperature. The two phases are identified as the same as the A and B-phases in pure 3He, from tip angle measurement and the NMR equations of Leggett [2]. The pressure and temperature dependence of the longitudinal resonance frequency of each phase is reported in this article.

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