Electronic Structure, Magnetic Order and Interlayer Magnetic Couplings in Metallic Superlattices

摘要: The general trends for the electronic structure of perfect model superlattices AmBn are calculated using a real-space tight·binding model. magnetic moments distribution and interlayer couplings between ferromagnetic layers Am (A=Fe or Co) coupled by non-magnetic (B=V Ru), nearly (B=Pd) antiferromagnetic (B=Cr) spacer Bn obtained as function thickness n. In first part, we present used calculation crystallographic considered (Fe/V, Fe/Cr, Co/Ru Co/Pd). These considera­ tions will be applied to non·magnetic cases derive interlayers couplings. second apply method presented previously with an (Fe,Cr.). Using "d" band show that coupling energy can understood in terms strong interfacial antifer­ romagnetic constrained wall Cr layer giving rapidly oscillating energy. An extension previous taking into account "spd" hybridization does not affect conclusion. Finally examine distribu­ tion stability tilted find this is degenerate collinear arrangement.