MAGNETOTRANSPORT IN MO NI SUPERLATTICES

We have measured the electrical resistivity, magnetoresistance (MR), a nd Hall resistivity of Mo/Ni superlattices with modulation wavelengths LAMBDA between 13.8 angstrom and 5000 angstrom in the temperature ran ge 1-300 K and in magnetic fields up to 50 kG. The samples with LAMBDA less than 680 angstrom exhibit a resistance minimum below 15 K and a logarithmic temperature dependence below this minimum. The perpendicul ar MR(perpendicular-to) is negative and the parallel MR(parallel-to) i s positive for large layer thickness. The Hall voltage saturates at hi gh fields and the saturation value exhibits a maximum as a function of superlattice period.