Pressure-induced enhancement of the transition temperature of the magnetic-field-induced superconducting state in λ−(BETS)2FeCl4
L. Balicas, V. Barzykin, K. Storr, J. S. Brooks, M. Tokumoto, S. Uji, H. Tanaka, H. Kobayashi, A. Kobayashi
DOI 10.1103/PhysRevB.70.092508 · Physical Review B
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Abstract
The effect of a small hydrostatic pressure p≃1.4kbar on the temperature-magnetic field phase diagram of the organic conductor λ−(BETS)2FeCl4 is reported. At zero field a hysteretic superconducting (Tc≃5.6K) to antiferromagnetic insulator transition (TN≃4K) is found. Furthermore, the transition temperature to the field-induced superconducting (FISC) state, as well as its concomitant upper critical field, is found to increase by ∼33%. The phase diagram of the FISC state for both pressures is well described in terms of the Jaccarino-Peter effect if the interactions among quasiparticles is taken into account.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| λ-(BETS)2FeCl4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 5.6 | 0.14 GPa | onset |
| λ-(BETS)2FeCl4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 4.5 | 0.0001 GPa | onset |
| λ-(BETS)2GaCl4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
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