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Stable Spin Precession at one Half of Equilibrium Magnetization in Superfluid 3He-B

V. V. Dmitriev, I. V. Kosarev, M. Krusius, D. V. Ponarin, V. M. H. Ruutu, G. E. Volovik

cond-matarXiv:cond-mat/9606221

Abstract

New stable modes of spin precession have been observed in superfluid 3He-B. These dynamical order parameter states include precession with a magnetization S=pSeq which is different from the equilibrium value Seq. We have identified modes with p=1, 1/2 and ≈ 0. The p=1/2 mode is the second member of phase correlated states of a spin superfluid. The new states can be excited in the temperature range 1-T/Tc 0.02 where the energy barriers between the different local minima of the spin-orbit energy are small. They are stable in CW NMR due to low dissipation close to Tc.

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