Superfluid 3He in Aerogel
نویسندگان
چکیده
منابع مشابه
Acoustic Spectroscopy of Superfluid 3He in Aerogel
N. Mulders Department of Physics and Astronomy, University of Delaware, 223 Sharp Laboratory, Newark, Delaware 19716 (Received 21 December 1998) Liquid 3He in 98%-porous aerogel simultaneously possesses properties of a disordered p-wave superfluid and an elastic solid. We have observed two sound modes of superfluid 3He in aerogel. The first (fast) sound is a compression wave, and the second (sl...
متن کاملSuperfluid transition in superfluid 3He in radially compressed aerogel
The Spin Supercurrent and Bose-Einstein condensation of magnons similar to an atomic BEC was observed in 1984 in superfluid He-B. Recently we discovered 2 new types of BEC in superfluid He in deformed aerogel. The orbital part of the wave function orients along the deformation and changes the magnon-magnon interaction. In some cases it forms a magnon trap. We can do it for He-A by uniaxially co...
متن کاملDissipation mechanisms near the superfluid 3He transition in aerogel.
We have investigated the dissipation (Q-1) using the torsion pendulum technique for pure 3He and 3He-4He mixtures in silica aerogel near the 3He superfluid transition (T(c)) in aerogel. With pure 3He the Q-1 decreases at the onset of superfluidity. When phase separated 3He-4He mixtures are introduced into the aerogel, the Q-1 does not decrease as rapidly and eventually increases for the highest...
متن کاملScaling Results for Superfluid 3He in 98% Open Aerogel
We present experimental observations of the suppressed superfluid transition temperature, Tca, superfluid fraction, ρs/ρ and Leggett frequency of 3He-B in aerogel, ΩBa. We determine Tca from mass decoupling and the vanishing of the frequency shift away from the Larmor frequency in our different samples and different laboratories. We find that the suppressed transition temperature for 3He in aer...
متن کامل3He in Aerogel
G. Lawes,1 S. C. J. Kingsley,1,* N. Mulders,2 and J. M. Parpia1 1Laboratory of Atomic and Solid State Physics, Cornell University, Ithaca, New York 2Department of Physics and Astronomy, University of Delaware, Newark, Delaware (Received 15 December 1999) We have investigated the superfluid transition of 3He in different samples of silica aerogel. By comparing new measurements on a 99.5% sample ...
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ژورنال
عنوان ژورنال: Annual Review of Condensed Matter Physics
سال: 2019
ISSN: 1947-5454,1947-5462
DOI: 10.1146/annurev-conmatphys-031218-013134