Unidirectional anisotropy in ultrathin transition-metal films

R. Skomski, H.-P. Oepen, J. Kirschner
1998 Physical Review B (Condensed Matter)  
Unidirectional magnetic anisotropies in low-symmetry magnetic thin films such as cobalt on vicinal copper surfaces are investigated. Possible explanations of the observed uniaxial anisotropies are competing anisotropy ͑CA͒ coefficients and Dzyaloshinskii-Moriya ͑DM͒ interactions. Unidirectional CA is an interesting mechanism occurring in low-symmetry magnets and involves neither antiferromagnetic exchange nor spin canting. It is visible in the easy-cone regime and decides, for example, whether
more » ... he preferential magnetization direction points up or down a stepped surface. In the case of Co/Cu(11n) films, however, the anisotropy direction speaks in favor of DM-type interactions. ͓S0163-1829͑98͒03541-3͔
doi:10.1103/physrevb.58.11138 fatcat:2bfefnm5z5fo3ohik4amcetdhu