Imaging spin-reorientation transitions in consecutive atomic Co layers on Ru(0001)

被引：61
|
作者：
El Gabaly, F [1 ]
Gallego, S
Muñoz, C
Szunyogh, L
Weinberger, P
Klein, C
Schmid, AK
McCarty, KF
de la Figuera, J
机构：
[1] Univ Autonoma Madrid, Dept Fis Mat Condensada, E-28049 Madrid, Spain
[2] Univ Autonoma Madrid, Ctr Microanal Mat, E-28049 Madrid, Spain
[3] CSIC, Inst Ciencia Mat, E-28049 Madrid, Spain
[4] Budpest Univ Technol & Econ, Dept Theoret Phys, H-1521 Budapest, Hungary
[5] Budpest Univ Technol & Econ, Ctr Appl Math & Computat Phys, H-1521 Budapest, Hungary
[6] Vienna Univ Technol, Ctr Computat Mat Sci, A-1060 Vienna, Austria
[7] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA
[8] Sandia Natl Labs, Livermore, CA 94550 USA
来源：
PHYSICAL REVIEW LETTERS | 2006年 / 96卷 / 14期
关键词：
D O I：
10.1103/PhysRevLett.96.147202
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
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.
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页码：1 / 4
页数：4
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