Author/Authors :
Tokumoto، نويسنده , , M. and Kinoshita، نويسنده , , N. and Tanaka، نويسنده , , Y. and Kinoshita، نويسنده , , T. and Anzai، نويسنده , , H.، نويسنده ,
Abstract :
We studied the effect of cooling rate on superconductivity of both deuterated and undeuterated κ-(BEDT-TTF)2Cu[N(CN)2]Br and observed a significant difference in the effect of cooling speed not only on Tc but also on the superconducting volume fraction. In particular, it was quite unexpected that an extremely slow cooling rate as low as 0.02K/min was found to have still a significant effect on the superconducting state.