Abstract
Spin (accompanied by mass) flows can be induced magnetically in its “ferromagnetic” spin-polarized superfluid 3 He A 1 phase. Observations have been made by applying magnetic field gradients across a spin filter and measuring the induced pressure gradient. There are issues which remain unresolved. An ideal static magnetic fountain effect has not been seen. The observed effect decays with a characteristic relaxation time. The relaxation time jumps by a factor of 2 near the middle of the A 1 phase. The presence of A 1/A 2 phase interface has been speculated to cause the jump. The measured relaxation time increases with the applied field up to 1.4 T . The origins of the temperature and field dependence are not understood. Planned experiments to probe these issues are described.
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