EFFECT OF PUMPING OF A CONSTANT MAGNETIC-FIELD BY AN OSCILLATING APPLIED MAGNETIC-FIELD INTO A TYPE-II SUPERCONDUCTOR

We show that an applied periodical low-frequency magnetic field H(t) n ot-equal not-equal H sin (omegat + phi) can induce a constant magnetic induction deep inside a soft type-II superconductor even if the const ant component of the external field is zero. The applied field H-0 + H-1 sin omegat induces a constant magnetic induction B(infinity) much greater than H-0 deep inside the sample if H(c2) > H-1 much greater t han H-0 > H(cl). The constant component of an electric field appearing in a soft superconductor with an oscillating current is found.