HALL CONDUCTIVITY OF A MOVING MAGNETIC-FIELD-INDUCED SPIN-DENSITY-WAVE

The influence of the motion of a magnetic-field-induced spin-density-w ave (FISDW) on the quantum Hall effect in a quasi-one-dimensional cond uctor is studied theoretically. In the ideal case, when the pinning an d the damping of the FISDW can be neglected, it is found that the coun terflow of the FISDW precisely cancels the quantum Hall current, so th at the resultant Hall conductivity is zero. In real systems, the Hall conductivity should vanish at the high frequencies where the dynamics of the FISDW is dominated by inertia, and the pinning and the damping can be neglected.