کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9834290 | 1524908 | 2005 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Monatomic Fe and Co wires at the Pt surface step edge: theory of the unconventional magnetic anisotropy
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
فیزیک ماده چگال
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Monatomic Fe and Co wires at the Pt surface step edge: theory of the unconventional magnetic anisotropy Monatomic Fe and Co wires at the Pt surface step edge: theory of the unconventional magnetic anisotropy](/preview/png/9834290.png)
چکیده انگلیسی
We report a first-principles investigation of the anomalous magnetic anisotropy of quasi-one-dimensional ferromagnetic Fe and Co chains decorating the Pt(1Â 1Â 1) step edge. Our calculations for both Fe and Co wires show that the easy magnetization is always confined in the plane perpendicular to the wire. The symmetry breaking at the step leads to an easy magnetization axis of the Co wire at an odd angle of â¼20â towards the Pt step, in agreement with the experiment. This canting becomes more pronounced for the Fe wire, for which we obtain an easy axis at 30â towards the Pt step. Also, the Fe and Co spin and orbital moments become noncollinear, even in the case of a collinear ferromagnetic spin arrangement.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Magnetism and Magnetic Materials - Volumes 290â291, Part 1, April 2005, Pages 257-260
Journal: Journal of Magnetism and Magnetic Materials - Volumes 290â291, Part 1, April 2005, Pages 257-260
نویسندگان
Alexander B. Shick, FrantisËek Máca, Peter M. Oppeneer,