COMPARATIVE STUDY OF RESPONSE TO HIGH DC ELECTRIC FIELD IN A LARGE TEMPERATURE RANGE FOR K0.3MoO3

Abstract

We investigated the response of K 0.3 MoO 3 to high dc electric field in a large temperature range 14–95 K. The remarkable switching from insulating to highly conducting state was observed at 14–75 K. The second threshold field for the switching takes a minimum value at around 50 K. In the highly conducting state, the conductance displays a novel linear correlation to the applied electric field. We also compared the I–E characteristic obtained in the constant-voltage condition and the constant-current condition, which show distinct differential resistances.