Giant nonlinear conductivity and spontaneous current oscillation in an incommensurate organic superconductor.
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.
Mori
Takehiko
T
Department of Organic and Polymeric Materials, Tokyo Institute of Technology, O-okayama, Meguro-ku, Tokyo, Japan. mori.t.ae@m.titech.ac.jp
Bando
Yoshimasa
Y
Kawamoto
Tadashi
T
Terasaki
Ichiro
I
Takimiya
Kazuo
K
Otsubo
Tetsuo
T