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 - Thermal conductivity of liquid He-3 in aerogel: A gapless superfluid.
AU - Fisher, Shaun N.
AU - Guénault, A.M.
AU - Mulders, N.
AU - Pickett, George R.
PY - 2003/9
Y1 - 2003/9
N2 - We have measured the thermal conductivity of liquid He-3 in 98% aerogel at ultralow temperatures. Aerogel introduces disorder on a scale comparable to the superfluid coherence length. At low pressures the liquid in the aerogel shows normal-state behavior with conductivity linear in temperature. At pressures above similar to6 bars the onset of superfluidity suppresses the conductivity and the thermal conductivity again tends towards linear behavior in the very low temperature limit, providing strong evidence that here the liquid He-3 in the aerogel is behaving as a gapless superfluid.
AB - We have measured the thermal conductivity of liquid He-3 in 98% aerogel at ultralow temperatures. Aerogel introduces disorder on a scale comparable to the superfluid coherence length. At low pressures the liquid in the aerogel shows normal-state behavior with conductivity linear in temperature. At pressures above similar to6 bars the onset of superfluidity suppresses the conductivity and the thermal conductivity again tends towards linear behavior in the very low temperature limit, providing strong evidence that here the liquid He-3 in the aerogel is behaving as a gapless superfluid.
KW - SUPERFLUID
KW - HELIUM-3
KW - ENERGY-GAP
U2 - 10.1103/PhysRevLett.91.105303
DO - 10.1103/PhysRevLett.91.105303
M3 - Journal article
VL - 91
SP - 105303
JO - Physical review letters
JF - Physical review letters
SN - 1079-7114
IS - 10
ER -