Superconductivity competing with the incommensurate antiferromagnetic insulating state in the organic conductor (MDT-TS)(AuI2)0.441
Tadashi Kawamoto, Yoshimasa Bando, Takehiko Mori, Kazuo Takimiya, Tetsuo Otsubo
DOI 10.1103/PhysRevB.71.052501 · Physical Review B
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Abstract
The organic conductor (MDT-TS)(AuI2)0.441 undergoes a metal-insulator transition at TMI=50K, where MDT-TS is 5H-2-(1,3-diselenol-2-ylidene)-1,3,4,6-tetrathiapentalene. The static magnetic susceptibility demonstrates an antiferromagnetic ordering below this temperature. Hydrostatic pressure suppresses this insulating state, and a superconductivity appears at Tc=3.2K above 10.5kbar. The phase diagram demonstrates a transition from the incommensurate antiferromagnetic insulating state to a superconducting state in an organic conductor with a noninteger carrier number.
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. | 4.3 | 1.05 GPa | onset |
| (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 | midpoint |
| (MDT-TS)(AuI2)0.441 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 4.4 | 1.19 GPa | midpoint |
| (MDT-TSF)(AuI2)0.436 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure unresolved | unknown |
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