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