paper

Thermal activation between Landau levels in the organic superconductor $Î²''$-(BEDT-TTF) $_{2}$ SF $_{5}$ CH $_{2}$ CF $_{2}$ SO $_{3}$

arXiv:cond-mat/0105048 · doi:10.1103/PhysRevLett.87.117001

Abstract

We show that Shubnikov-de Haas oscillations in the interlayer resistivity of the organic superconductor $Î²''$-(BEDT-TTF) $_{2}$ SF $_{5}$ CH $_{2}$ CF $_{2}$ SO $_{3}$ become very pronounced in magnetic fields $\sim$ ~60~T. The conductivity minima exhibit thermally-activated behaviour 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.

6 pages, 4 figures

Thermal activation between Landau levels in the organic superconductor $Î²''$-(BEDT-TTF)2​SF5​CH2​CF2​SO3​

Abstract

Thermal activation between Landau levels in the organic superconductor $Î²''$-(BEDT-TTF) $_{2}$ SF $_{5}$ CH $_{2}$ CF $_{2}$ SO $_{3}$