Shubnikov–de Haas oscillations in the organic superconductor κ-(BEDT-TTF)2Cu[N(CN)2]Br, where BEDT-TTF is bis(ethylenedithio)tetrathiafulvalene
M. V. Kartsovnik, G. Yu. Logvenov, H. Ito, T. Ishiguro, G. Saito
DOI 10.1103/PhysRevB.52.R15715 · Physical Review B
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Abstract
Magnetoresistance of the layered organic superconductor κ-(BEDT-TTF)2X with X=Cu[N(CN)2]Br has been studied under pressure up to ≊9 kbar. Prominent oscillations attributed to the Shubnikov–de Haas effect have been found at the highest pressure. The oscillation frequency corresponds to a Fermi-surface cylinder with its axis normal to the crystal highly conducting plane and cross section of 1.56×1014 cm−2. The latter value is a factor of 4 smaller than that predicted by band-structure calculations for the ambient pressure.
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. | 10 | Pressure not reported | unknown |
| κ-(BEDT-TTF)2Cu(NCS)2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 10 | Pressure not reported | unknown |
| κ-(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. | 10 | Pressure not reported | unknown |
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