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 - The dynamic texture of superfluid He-3-B at very low temperatures and in high magnetic fields.
AU - Bradley, D. Ian
AU - Fisher, Shaun N.
AU - Guénault, A.M.
AU - Haley, Richard P.
AU - Martin, Hazel
AU - Pickett, George R.
PY - 2005/2
Y1 - 2005/2
N2 - We report experiments using a pair of crossed vibrating Wire resonators (VWRs) in the B phase of superfluid He-3 in the zero temperature ballistic limit and in magnetic fields up to the B to A phase transition field of 340 mT. The VWRs are sensitive mechanical probes of energy gaps, textures and turbulent flow. In high magnetic fields the energy gap is no longer isotropic but significantly distorted, and the damping measured by the VWRs increases. With the crossed pair, we find that we can reduce the damping measured by one VWR when we increase the drive on the other one. We suggest that the reduction arises from the orientation of the surrounding texture by superflow and the screening of quasiparticles by the creation of superfluid turbulence.
AB - We report experiments using a pair of crossed vibrating Wire resonators (VWRs) in the B phase of superfluid He-3 in the zero temperature ballistic limit and in magnetic fields up to the B to A phase transition field of 340 mT. The VWRs are sensitive mechanical probes of energy gaps, textures and turbulent flow. In high magnetic fields the energy gap is no longer isotropic but significantly distorted, and the damping measured by the VWRs increases. With the crossed pair, we find that we can reduce the damping measured by one VWR when we increase the drive on the other one. We suggest that the reduction arises from the orientation of the surrounding texture by superflow and the screening of quasiparticles by the creation of superfluid turbulence.
KW - A-B TRANSITION
KW - QUANTUM TURBULENCE
U2 - 10.1007/s10909-005-2265-4
DO - 10.1007/s10909-005-2265-4
M3 - Journal article
VL - 138
SP - 583
EP - 588
JO - Journal of Low Temperature Physics
JF - Journal of Low Temperature Physics
SN - 0022-2291
IS - 3-4
ER -