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26 April 2024

» arxiv » cond-mat/0512220

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Imaging Spin Reorientation Transitions in Consecutive Atomic Co layers
Farid El Gabaly ; Silvia Gallego ; Carmen Munoz ; Laszlo Szunyogh ; Peter Weinberger ; Christof Klein ; Andreas K. Schmid ; Kevin F. McCarty ; Juan de la Figuera ;
Date:	10 Dec 2005
Subject:	Materials Science
Abstract:	By means of spin-polarized low-energy electron microscopy (SPLEEM) we show that the magnetic easy-axis of one to three atomic-layer thick cobalt films on ruthenium crystals 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, with a Curie temperature well above room temperature. Fully-relativistic calculations based on the Screened Korringa-Kohn-Rostoker (SKKR) method demonstrate that only for two-monolayer cobalt films the interplay between strain, surface and interface effects leads to perpendicular magnetization.
Source:	arXiv, cond-mat/0512220
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