ELECTRICAL-PROPERTIES OF PERIODIC PD MO BIMETAL FILMS/

The electrical resistivity and the temperature coefficient of resistan ce (TCR) of periodic Pd/Mo bimetal films are reported for the bilayer wavelength in the range 1.5-13 nm by varying the ratio of Pd and Mo th icknesses in the temperature range from 77 to 300 K. The resistivity i s found to be nearly proportional to the inverse of the bilayer wavele ngth. The most striking feature is that the TCR is decreased with bila yer wavelength and the change in sign of the TCR as Pd/Mo thickness ra tio is varied. Taking into account the effects of electron weak locali zation in Mo layer, the experimental results can be explained.