Mott transition and superconductivity in the strongly correlated organic superconductor κ−(BEDT−TTF)2Cu[N(CN)2]Br
T. Sasaki, N. Yoneyama, N. Kobayashi
DOI 10.1103/PhysRevB.77.054505 · Physical Review B
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Abstract
The magnetic-field effect on the phase diagram of the organic Mott system κ−(BEDT−TTF)2Cu[N(CN)2]Br in which the bandwidth was tuned by the substitution of deuterated molecules was studied by means of the resistivity measurements performed in magnetic fields. The lower critical point of the first-order Mott transition, which ended on the upper critical field Hc2-temperature plane of the superconductivity, was determined experimentally in addition to the previously observed upper critical end point. The lower critical end point moved to a lower temperature with the suppression of Tc in magnetic fields and the Mott transition recognized so far as the S-shaped curve reached T=0 when H>Hc2 in the end.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| κ-(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 | Pressure not reported | onset |
| κ-[(h8-ET)1-x(d8-ET)x]2Cu[N(CN)2]Br Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 11 | Pressure not reported | onset |
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