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Published on: August 2, 2019
Giant nonlinear conductivity and spontaneous current oscillation in an incommensurate organic superconductor
Takehiko Mori1, Yoshimasa Bando, Tadashi Kawamoto
1Department of Organic and Polymeric Materials, Tokyo Institute of Technology, O-okayama, Meguro-ku, Tokyo, Japan. mori.t.ae@m.titech.ac.jp
Abstract:
Remarkable nonlinear conductivity is observed in the organic conductor (MDT-TS)(I2Br)_{0.420} (MDT-TS: 5H-2-(1,3-diselenol-2-ylidene)-1,3,4,6-tetrathiapentalene) below the metal-insulator transition at 30 K. This compound is characterized by the incommensurate donor and anion columns, and the non-Ohmic behavior is associated with the collective excitation at the antiferromagnetic insulating state. We have observed spontaneous current oscillation analogous to the organic thyristor found in the theta-phase organic conductor.
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