Interlayer transport in the organic superconductor kappa-(BEDT-TTF)(2)Cu[N(CN)(2)]Br

Interlayer magnetoresistance as a function of field and temperature with fields parallel and perpendicular to the current direction in the organic superconductor kappa-(BEDT-TTF)(2)Cu[N(CN)(2)]Br has been measured. For H parallel to I, the isothermal magnetoresistance R(H) displays a peak effect as a function of field. For H perpendicular to I, R(I-I) increases monotonically with increasing field. Comparison of the peak field with the H-c2(T) data suggests that the peak in R(R) occurs in the mixed state. We analyze the data in terms of the resistively shunted Josephson junction model and the density of states fluctuation model.