Chaotic dynamics of charge density wave in (BEDT-TTF) 3 Cl 2 2H 2 O
- 1 February 1996
- journal article
- Published by Taylor & Francis in Ferroelectrics
- Vol. 176 (1) , 329-334
- https://doi.org/10.1080/00150199608223620
Abstract
The conductivity of quasi-2D organic conductor (BEDT-TTF)3Cl2 2H2Os have been investigated at low temperatures in high magnetic fields up to 14 T using Van der Pauw method. The sample undergoes metal-insulator transition at T ∼ 100 K with the total increase of the resistivity more than five orders of magnitude when the temperature reaches T = 4.2 K. It had been found out that the excess of the critical value by the measuring current induces irreversible changes of the sample conductivity. A wide region of temperature, 30 K ≤ T ≤ 100 K, appears, where the resistivity ρ(T) acquires chaotic behavior. At T < 30 K the abrupt decrease of the conductivity by two orders of magnitude or the bistability of the conductivity in a form of two ρ(T) branches is observed. The model explaining the metal insulator transition and above mentioned anomalies by the charge density wave formation with the well-developed domain structure is proposed.Keywords
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