Magnetic-field-induced superconductivity in the antiferromagnetic organic superconductor κ−(BETS)2FeBr4
T. Konoike, S. Uji, T. Terashima, M. Nishimura, S. Yasuzuka, K. Enomoto, H. Fujiwara, B. Zhang, H. Kobayashi
DOI 10.1103/PhysRevB.70.094514 · Physical Review B
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Abstract
The high magnetic field electronic state of the quasi-two-dimensional organic superconductor,κ−(BETS)2FeBr4 was investigated by the resistance measurements. At very low temperatures, magnetic-field-induced superconductivity (FISC) was observed under high magnetic field parallel to the conducting layers. The obtained magnetic phase diagrams are well reproduced by Fisher’s theory based on the Jaccarino-Peter compensation mechanism, where the external field and internal field caused by the magnetic moments are canceled out. The analyses of the phase diagram show that the orbital effect is not so small in this compound, which makes the Fulde-Ferrell-Larkin-Ovchinnikov state less likely.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| κ-(BETS)2FeBr4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 1.4 | Pressure not reported | unknown |
| λ-(BETS)2FeCl4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 5.5 | Pressure not reported | unknown |
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