Thermal Activation between Landau Levels in the Organic Superconductor β′′−(BEDT−TTF)2SF5CH2CF2SO3
M.-S. Nam, A. Ardavan, J. A. Symington, J. Singleton, N. Harrison, C. H. Mielke, J. A. Schlueter, R. W. Winter, G. L. Gard
DOI 10.1103/PhysRevLett.87.117001 · Physical Review Letters
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Abstract
We show that Shubnikov–de Haas oscillations in the interlayer resistivity of the organic superconductor β′′−(BEDT−TTF)2SF5CH2CF2SO3 become very pronounced in magnetic fields ∼60T. The conductivity minima exhibit thermally activated behavior that can be explained simply by the presence of a Landau gap, with the quasi-one-dimensional Fermi surface sheets contributing negligibly to the conductivity. This observation, together with complete suppression of chemical potential oscillations, is consistent with an incommensurate nesting instability of the quasi-one-dimensional sheets.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| β''-(BEDT-TTF)2SF5CH2CF2SO3 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 5.4 | Pressure not reported | unknown |
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