کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8153083 | 1524761 | 2018 | 17 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Robustness of majority gates based on nanomagnet logic
ترجمه فارسی عنوان
پایداری دروازه های اکثریت بر اساس منطق نانومغناطیس
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کلمات کلیدی
منطق نانومغناطیس، اثرات کران مغناطیسی، میکروسکوپ نیروی مغناطیسی، میکرومغناطیس،
موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
فیزیک ماده چگال
چکیده انگلیسی
We studied the evolution of the magnetic state of a majority logic gate consisting of a cluster of five dipolarly-coupled nanomagnets, fabricated by e-beam lithography, under the application of a clocking field, using a combination of magneto-optical Kerr effect and magnetic force microscopy. The data were interpreted by advanced GPU-based micromagnetic simulations, where, in addition to the single ideal-shaped gate, a 3â¯Ãâ¯3 array of “realistic gates”, whose shape is directly derived from scanning electron microscopy images, is considered. A fairly good agreement between measurements and simulations has been achieved, showing that asynchronous switching of nominally identical gates may occur, because of unavoidable structural and morphological imperfections. Moreover, a slight misalignment of 1°â2° of the clocking field with respect to the hard axis of the dots may be detrimental for the correct logic operation of the gates. It follows that reliable, error-free and reproducible operations in future magnetologic devices would require tight control and precision of both the lithographic process and the direction of the clocking field. Moreover, a significant improvement could be insured by a stronger dipolar coupling between the dots, for instance increasing their thickness and/or using materials with larger magnetization.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Magnetism and Magnetic Materials - Volume 460, 15 August 2018, Pages 432-437
Journal: Journal of Magnetism and Magnetic Materials - Volume 460, 15 August 2018, Pages 432-437
نویسندگان
Marco Gonelli, Samuele Fin, Giovanni Carlotti, Himadri Dey, György Csaba, Wolfgang Porod, Gary H. Bernstein, Diego Bisero,