TY - JOUR
T1 - Magnon thermal conductivity of solid He3 in the U2D2 antiferromagnetic phase
AU - Feng, Y. P.
AU - Schiffer, P.
AU - Mihalisin, J.
AU - Osheroff, D. D.
PY - 1990
Y1 - 1990
N2 - We report the first measurement of magnon thermal conductivity in monodomain single crystals of 3He in the U2D2 antiferromagnetic phase. The magnon mean free path λ was found first to rise rapidly upon cooling below TN and then more slowly at low temperatures, depending upon the sample. The temperature dependence is consistent with magnon umklapp scattering at high T, i.e., λ proportional to T-2 exp(Δ/kBT), with Δ/kB determined to be 5.8(±0.3) mK. The limiting low-temperature values of λ. varied from 0.3 to 3 μm. a Department of Physics, Cornell University, Ithaca, NY 14853.
AB - We report the first measurement of magnon thermal conductivity in monodomain single crystals of 3He in the U2D2 antiferromagnetic phase. The magnon mean free path λ was found first to rise rapidly upon cooling below TN and then more slowly at low temperatures, depending upon the sample. The temperature dependence is consistent with magnon umklapp scattering at high T, i.e., λ proportional to T-2 exp(Δ/kBT), with Δ/kB determined to be 5.8(±0.3) mK. The limiting low-temperature values of λ. varied from 0.3 to 3 μm. a Department of Physics, Cornell University, Ithaca, NY 14853.
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U2 - 10.1103/PhysRevLett.65.1450
DO - 10.1103/PhysRevLett.65.1450
M3 - Article
C2 - 10042269
AN - SCOPUS:4243348089
SN - 0031-9007
VL - 65
SP - 1450
EP - 1453
JO - Physical review letters
JF - Physical review letters
IS - 12
ER -