Deuterated κ-(BEDT-TTF)2Cu[N(CN)2]Br: A system on the borderof the superconductor–magnetic-insulator transition
A. Kawamoto, K. Miyagawa, K. Kanoda
DOI 10.1103/PhysRevB.55.14140 · Physical Review B
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Abstract
The electronic state of the deuterated salt of the organic system κ-(BEDT-TTF)2Cu[N(CN)2]Br, has been investigated by dc/ac susceptibility and /131C NMR measurements. We found that the system is situated in the critical region of the transition between a superconducting phase with a TC of ∼11.5 K and an antiferromagnetic phase with a TN of 14–15 K. It was also found that the rapid cooling through 80 K drives the superconducting phase into the magnetic phase, that is discussed in the light of the role of disorder near the Mott transition.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| (BEDT-TTF)2Cu[N(CN)2]Br Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 11.5 | Pressure unresolved | onset |
| (BEDT-TTF)2Cu[N(CN)2]Cl Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 13 | Pressure not reported | unknown |
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