A new formalism to calculate the transmission coefficient t of electrons from a material L into the same material L through a barrier B is presented. The barrier B is arbitrary and can be metallic, semiconducting or insulating. The important feature of this formalism is that it starts from the electronic structure of a periodic L/B superlattice. The electronic stucture of such a superlattice is...

The magnetic properties of Ni-Mo metallic superlattices have been examined by magnetization and polarized-neutron diffraction measurements. The samples are ferromagnetic, with an ordering temperature rapidly increasing with the superlattice period A. The saturation magnetization per nickel atom also increases with A, gradually approaching the value of the pure metal. The proximity of molybdenum...

Although metallic multilayers have recently attracted much attention, especially since the discovery of giant magnetoresistance in Fe /Cr multilayers [1], only a small number of true superlattice effects have been experimentally observed. These are the appearance of superlattice Bragg peaks in X-ray diffraction [2], the collective behavior of magnons in magnetic/non-magnetic superlattices [3], ...

A formalism to calculate the transmission coefficient t of electrons from a material L into the same material L through a barrier B is presented. The barrier B is arbitrary, and can be metallic, semiconducting, or insulating. The important feature of this formalism is that it starts from the electronic structure of a periodic L/B superlattice. The electronic structure of such a superlattice is ...

The residual resistivity in Co/Ni superlattices is shown to oscillate as a function of superlattice period for fixed Co to Ni thickness ratio. Additional experimental evidence shows that this behavior is enhanced when randomness is artificially introduced in the individual layer thickness. We analyze this in terms of a scattering mechanism associated with the presence of localized electron eige...