Giant Nonlinear Conductivity and Spontaneous Current Oscillation in an Incommensurate Organic Superconductor
Takehiko Mori, Yoshimasa Bando, Tadashi Kawamoto, Ichiro Terasaki, Kazuo Takimiya, Tetsuo Otsubo
DOI 10.1103/PhysRevLett.100.037001 · Physical Review Letters
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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 θ-phase organic conductor.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| (MDT-TS)(AuI2)0.441 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 3.2 | 1.05 GPa | unknown |
| (MDT-TS)(I2Br)0.420 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 6.2 | 1.38 GPa | unknown |
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