HEAT-CONDUCTION IN KAPPA-(BEDT-TTF)(2)CU(NCS)(2)

The first study of thermal conductivity, kappa, in a quasi-two-dimensi onal organic superconductor of the kappa-(BEDT-TTF)(2)X family reveals features analogous to those already observed in the cuprates. The ons et of superconductivity is associated with a sudden increase in kappa which can be suppressed by the application of a moderate magnetic held . At low temperatures, a finite linear term-due to a residual electron ic contribution-was resolved. The magnitude of this term is close to w hat is predicted by the theory of transport in unconventional supercon ductors. [S0031-9007(98)07704-7].