Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
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TY - JOUR
T1 - Phase diagram of the A and B phases of superfluid He-3 in aerogel.
AU - Brussaard, Peter
AU - Fisher, Shaun N.
AU - Guénault, A.M.
AU - Hale, A. J.
AU - Mulders, N.
AU - Pickett, George R.
PY - 2001/5
Y1 - 2001/5
N2 - We report the first measurements of the A-B phase transition of superfluid He-3 confined within 98% silica aerogel in high magnetic fields and low temperatures. A disk of aerogel is attached to a vibrating wire resonator. The resonant frequency yields a measure of the superfluid Fraction p,lp of the He-3 within the aerogel. The inferred rho (s)/rho value increases substantially at the A-to-B transition of the confined superfluid, allowing us to map the A-B phase diagram as a function of held and temperature. At 4.8 bars, the B-T transition curve looks very similar to that in bulk with a simple reduction factor of order 0.45 for both transition field and temperature.
AB - We report the first measurements of the A-B phase transition of superfluid He-3 confined within 98% silica aerogel in high magnetic fields and low temperatures. A disk of aerogel is attached to a vibrating wire resonator. The resonant frequency yields a measure of the superfluid Fraction p,lp of the He-3 within the aerogel. The inferred rho (s)/rho value increases substantially at the A-to-B transition of the confined superfluid, allowing us to map the A-B phase diagram as a function of held and temperature. At 4.8 bars, the B-T transition curve looks very similar to that in bulk with a simple reduction factor of order 0.45 for both transition field and temperature.
KW - superfluid
KW - helium-3
KW - aerogel
U2 - 10.1103/PhysRevLett.86.4580
DO - 10.1103/PhysRevLett.86.4580
M3 - Journal article
VL - 86
SP - 4580
EP - 4583
JO - Physical review letters
JF - Physical review letters
SN - 1079-7114
IS - 20
ER -