Non-ohmic conductivity of TaS3 in the low-temperature semiconducting regime |
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Authors: | T Takoshima M Ido K Tsutsumi T Sambongi S Honma K Yamaya Y Abe |
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Institution: | Department of Physics, Hokkaido University, Sapporo 060 Japan;Department of Nuclear Engineering, Hokkaido University, Sapporo 060 Japan |
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Abstract: | Electrical conductivity of the quasi one-dimensional conductor TaS3 was measured in the low-temperature semiconducting regime. Below 100K, the conductivity along c-axis (l-d axis) in the low field limit is characterized by the activated process with the activation energy of 250K, and the current-field (I-E) characteristic is nonlinear, increasing with the field strength. These results can be explained by the excitation of phase solitons associated with pinned CDW condensates. |
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