EVIDENCE FOR A 20-K TRANSITION IN BETA-(BEDT-TTF)2I3

Guided by the sudden drop in Hall coefficient below 20 K in beta-(BEDT TTF)2I3 we have searched for further evidence of phase transition at 2 0 K by both transport and thermodynamic measurements. We observe anoma ly in both temperature dependence of resistance and in specific heat n ear 22 K. We compare our results with other measurement on beta-(BEDT- TTF)213 in this temperature range. We also discuss the relation of thi s transition at 20 K to the two superconducting states with T(c)'s e.g . 1.5 K and 8 K.