Atomic-Layer Alignment Tuning for Giant Perpendicular Magnetocrystalline Anisotropy of 3d Transition-Metal Thin Films

作者：Hotta K^*; Nakamura K; Akiyama T; Ito T; Oguchi T; Freeman A J

来源：Physical Review Letters, 2013, 110(26): 267206.

DOI：10.1103/PhysRevLett.110.267206

The magnetocrystalline anisotropy (MA) of Fe-based transition-metal thin films, consisting of only magnetic 3d elements, was systematically investigated from full-potential linearized augmented plane-wave calculations. The results predict that giant MA with a perpendicular magnetic easy axis (PMA) can be achieved by tuning the atomic-layer alignments in an Fe-Ni thin film. This giant PMA arises from the spin-orbit coupling interaction between occupied and unoccupied Ni d(x2-y2,xy) bands crossing the Fermi level. A promising 3d transition-metal thin film for the MgO-based magnetic tunnel junctions with the giant PMA was, thus, demonstrated.

• 出版日期2013-6-28
• 单位西北大学