Gonelli M and Fin S and Carlotti G and Dey H and Csaba György and Porod W and Bernstein GH and Bisero D:
Robustness of majority gates based on nanomagnet logic.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 460.
pp. 432-437.
ISSN 0304-8853
(2018)
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| Abstract: | 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 3 x 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 degrees-2 degrees 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. (C) 2018 Elsevier B.V. All rights reserved. | |||||||||||||||||||||||||||
| Journal or Publication Title: | JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | |||||||||||||||||||||||||||
| Date: | 2018 | |||||||||||||||||||||||||||
| Volume: | 460 | |||||||||||||||||||||||||||
| Page Range: | pp. 432-437 | |||||||||||||||||||||||||||
| ISSN: | 0304-8853 | |||||||||||||||||||||||||||
| Institution: | Pázmány Péter Katolikus Egyetem | |||||||||||||||||||||||||||
| Kar: | Információs Technológiai és Bionikai Kar (2013.07.-) | |||||||||||||||||||||||||||
| Nyelv: | angol | |||||||||||||||||||||||||||
| MTMT rekordazonosító: | 3400173 | |||||||||||||||||||||||||||
| Date Deposited: | 2024. Nov. 29. 10:08 | |||||||||||||||||||||||||||
| Last Modified: | 2024. Nov. 29. 10:08 | |||||||||||||||||||||||||||
| URI: | https://publikacio.ppke.hu/id/eprint/1831 |
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