The first study of thermal conductivity, κ, in a quasi-two-dimensional
organic superconductor of the κ-(BEDT-TTF)2​X family reveals features
analogous to those already observed in the cuprates. The onset of
superconductivity is associated with a sudden increase in κ which can be
suppressed by the application of a moderate magnetic field. At low
temperatures, a finite linear term - due to a residual electronic contribution-
was resolved. The magnitude of this term is close to what is predicted by the
theory of transport in unconventional superconductors.Comment: 5 pages, 4 figures include