Antiferromagnetic ordering of the incommensurate organic superconductor (MDT-TS)(AuI2)0.441 with a high spin-flop field
Tadashi Kawamoto, Yoshimasa Bando, Takehiko Mori, Takako Konoike, Yamaguchi Takahide, Taichi Terashima, Shinya Uji, Kazuo Takimiya, Tetsuo Otsubo
DOI 10.1103/PhysRevB.77.224506 · Physical Review B
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Abstract
The magnetic torque and high-pressure transport properties of the incommensurate organic superconductor (MDT-TS)(AuI2)0.441 are investigated, where MDT-TS is 5H-2-(1,3-diselenol-2-ylidene)-1,3,4,6tetrathiapentalene. The magnetic torque provides unquestionable evidence of an antiferromagnetic ordered state with a high spin-flop field of 6.9 T at ambient pressure. Hydrostatic pressure suppresses this insulating state and induces superconductivity, where the superconducting transition temperature rises to the maximum, 4.9 K at 1.27 GPa; the superconducting phase exists between 1.0 and 1.8 GPa above 1.5 K.
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. | 6.2 | 1.27 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. | 4.9 | 1.27 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 |
| β'-(ET)2ICl2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 13.4 | 8.2 GPa | midpoint |
| (TMTSF)2AsF6 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 1.26 | 1.2 GPa | midpoint |
| (TMTTF)2Br Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 0.8 | 2.6 GPa | midpoint |
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