Impurity phases of superfluid 3He in aerogel

W. P. Halperin; G. Gervais; K. Yawata; N. Mulders

doi:10.1016/S0921-4526(02)02056-2

Impurity phases of superfluid ³He in aerogel

W. P. Halperin^*, G. Gervais, K. Yawata, N. Mulders

^*Corresponding author for this work

Physics and Astronomy

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

3 Scopus citations

Abstract

Discovery of impurity phases of superfluid ³He, produced by silica aerogel, provides a new approach to investigate the effect of disorder on unconventional pairing. A simple model that assumes homogeneous, isotropic scattering is in agreement with experiment including suppression of the superfluid transition temperature, the amplitude of the order parameter, and phase diagram of magnetic field, temperature, and pressure, with the feature that the polycritical point vanishes in a 98% porous aerogel. We also find a metastable equal-spin-pairing state in zero field although such a phase does not exist in equilibrium.

Original language	English (US)
Pages (from-to)	288-291
Number of pages	4
Journal	Physica B: Condensed Matter
Volume	329-333
DOIs	https://doi.org/10.1016/S0921-4526(02)02056-2
State	Published - May 2003
Event	Proceedings of the 23rd international conference on low temper - Hiroshima, Japan Duration: Aug 20 2002 → Aug 27 2002

Keywords

Aerogel
He
Impurity scattering
Superfluid

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Electrical and Electronic Engineering

Access to Document

10.1016/S0921-4526(02)02056-2

Cite this

@article{354f17dec1244ac7a5c5afea5315e810,

title = "Impurity phases of superfluid 3He in aerogel",

abstract = "Discovery of impurity phases of superfluid 3He, produced by silica aerogel, provides a new approach to investigate the effect of disorder on unconventional pairing. A simple model that assumes homogeneous, isotropic scattering is in agreement with experiment including suppression of the superfluid transition temperature, the amplitude of the order parameter, and phase diagram of magnetic field, temperature, and pressure, with the feature that the polycritical point vanishes in a 98% porous aerogel. We also find a metastable equal-spin-pairing state in zero field although such a phase does not exist in equilibrium.",

keywords = "Aerogel, He, Impurity scattering, Superfluid",

author = "Halperin, {W. P.} and G. Gervais and K. Yawata and N. Mulders",

note = "Funding Information: We acknowledge Jim Sauls for helpful discussions and support from the NSF, grant no. DMR-0072350. ; Proceedings of the 23rd international conference on low temper ; Conference date: 20-08-2002 Through 27-08-2002",

year = "2003",

month = may,

doi = "10.1016/S0921-4526(02)02056-2",

language = "English (US)",

volume = "329-333",

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journal = "Physica B: Condensed Matter",

issn = "0921-4526",

publisher = "Elsevier",

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TY - JOUR

T1 - Impurity phases of superfluid 3He in aerogel

AU - Halperin, W. P.

AU - Gervais, G.

AU - Yawata, K.

AU - Mulders, N.

N1 - Funding Information: We acknowledge Jim Sauls for helpful discussions and support from the NSF, grant no. DMR-0072350.

PY - 2003/5

Y1 - 2003/5

N2 - Discovery of impurity phases of superfluid 3He, produced by silica aerogel, provides a new approach to investigate the effect of disorder on unconventional pairing. A simple model that assumes homogeneous, isotropic scattering is in agreement with experiment including suppression of the superfluid transition temperature, the amplitude of the order parameter, and phase diagram of magnetic field, temperature, and pressure, with the feature that the polycritical point vanishes in a 98% porous aerogel. We also find a metastable equal-spin-pairing state in zero field although such a phase does not exist in equilibrium.

AB - Discovery of impurity phases of superfluid 3He, produced by silica aerogel, provides a new approach to investigate the effect of disorder on unconventional pairing. A simple model that assumes homogeneous, isotropic scattering is in agreement with experiment including suppression of the superfluid transition temperature, the amplitude of the order parameter, and phase diagram of magnetic field, temperature, and pressure, with the feature that the polycritical point vanishes in a 98% porous aerogel. We also find a metastable equal-spin-pairing state in zero field although such a phase does not exist in equilibrium.

KW - Aerogel

KW - He

KW - Impurity scattering

KW - Superfluid

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DO - 10.1016/S0921-4526(02)02056-2

M3 - Conference article

AN - SCOPUS:0037906285

SN - 0921-4526

VL - 329-333

SP - 288

EP - 291

JO - Physica B: Condensed Matter

JF - Physica B: Condensed Matter

T2 - Proceedings of the 23rd international conference on low temper

Y2 - 20 August 2002 through 27 August 2002

ER -