NONSTATIONARY EFFECTS IN NBSE3 INTERCALATED WITH HYDROGEN

Temperature dependences of resistivity and current-voltage characteris tics of NbSe3 single crystals intercalated with hydrogen are investiga ted in the temperature range 90-300 K in the normal state and in a sta te with a charge density wave near the first phase transition at 145 K . A state with nonlinear conductivity at T>145 K, IVC with a negative differential resistance, and low-frequency voltage oscillations in the state with the CDW are discovered. The results are interpreted on the basis of concepts of redistribution of intercalated hydrogen under th e action of temperature diffusion and electric field during the propag ation of a charge density wave. (C) 1998 American Institute of Physics . [S1063-777X(98)00701-4].