MAGNETIC-FIELD EFFECTS ON CHARGE-DENSITY WAVE STRUCTURE AND TRANSPORT IN NBSE3 AND FEXNBSE3

The magnetic field couples strongly to the static low temperature charge-density wave state in both NbSe//3 and Fe//xNbSe//3. The electronic conductivity at both high and low electric fields is modified by the magnetic field. At very low temperatures the charge-density wave dynamics are also modified by the magnetic field. In Fe//xNbSe//3 at high magnetic and electric fields enhanced Froelich mode conductivity is observed at 1. 2 K. The experiments suggest the presence of an anomalous magnetic component in the density wave structure.