Normal state resistivity of underdoped YBa2Cu3O7-d films and La2-xSrxCuO4 ultra-thin films in fields up to 60 T

We present the normal-state resistance of La2-xSrxCuO4 thin films under epi taxial strain, measured below T-c by applying pulsed fields up to 60 T. We compare these data with earlier data on YBa2Cu3Ox thin firms in the underdo ped regime. The data are analyzed in terms of the recently proposed 1D quan tum transport model and charge-stripe models. The high field data have been used to identify the new regimes and dimensional crossovers caused by the formation of stripes and their interplay with disorder.