Magnetic superfluidity in 3He

The region of stable superfluid transfer in the A- and B-phases of He3 is determined. As a criterion of stbility the condition of positive determinancy of the small static energy. fluctuations near states with fluxes of the magnetic moment components is used. The condition is a generalization of the Landau critertion in superfluidity theory. The critical gradients are determined for the case when the transfer is determined by the gradient of the angle of rotation of the order parameter in spin space (spin transfer) or by the graient of the magnetic moment precession phase (precession transfer) and also in the general case of gradients of both angular variables. Spin dynamics equations are derived which averaged over rapid variation of the two angular variables, the rotation angle of the order parameter and of the precession phase. A solution of the equations is found which corresponds to conditions of dynamic suppression of the magnetic moment in which a magnetic moment which is much smaller than the equilibrium value can be maintained by spin pumping with aid of a rotating magnetic field. If such conditions are set up in a chamber with He3 a magnetic superfluid flow should arise in a channel leading out from the chamber