Effect of magnetic field on the ground state of 2-D organic superconductor κ-(ET)2Cu[N(CN)2]Cl

We report the results of resistivity measurements carried out on single crystals of κ-(ET)2Cu-[N(CN)2]Cl in an applied magnetic fields to 10 T. Hydrostatic pressures have been used to stabilize the metallic state and superconductivity. In a fields to 10 T applied parallel to the highly conducting a-c plane, and in a low fields normal to the plane the field effect on the superconducting transition is observed to be similar to other layered superconductors. However, the application of a higher fields normal to the a-c plane causes the resistivity to exhibit sharp metal/superconductor to insulator transition.