Sat, 26 Jul 2008 06:16:53 BST CiteULike: dchen's Szunyogh http://www.citeulike.org/user/dchen/author/Szunyogh CiteULike.org en-gb Copyright © 2004-2008 citeulike.org http://www.citeulike.org/user/dchen/article/2758339 <i>Physical Review Letters, Vol. 96, No. 14. (2006)</i><br /><br />By means of spin-polarized low-energy electron microscopy, we show that the magnetic easy axis of one to three atomic-layer thick cobalt films on Ru(0001) changes its orientation twice during deposition: One-monolayer and three-monolayer thick films are magnetized in plane, while two-monolayer films are magnetized out of plane. The Curie temperatures of films thicker than one monolayer are well above room temperature. Fully relativistic calculations based on the screened Korringa-Kohn-Rostoker method demonstrate that only for two-monolayer cobalt films does the interplay between strain, surface, and interface effects lead to perpendicular magnetization. Imaging Spin-Reorientation Transitions in Consecutive Atomic Co Layers on Ru(0001) Farid Gabaly Silvia Gallego Carmen Noz Laszlo Szunyogh Peter Weinberger Christof Klein Andreas Schmid Kevin Mccarty Juan doi:10.1103/PhysRevLett.96.147202 Physical Review Letters, Vol. 96, No. 14. (2006) 2008-05-05T16:10:21-00:00 2006 Physical Review Letters 96 14 APS 2006 atom film focus magnetic material