Robustness of majority gates based on nanomagnet logic
  • Metaadatok
Tartalom: https://publikacio.ppke.hu/id/eprint/1831/
Archívum: PPKE Publikáció Repozitórium
Gyűjtemény: Állapot = Megjelent
Szakterület = 02. Műszaki és technológiai tudományok: 02.02. Villamosmérnöki és informatikai tudományok: 02.02.01. Villamos- és elektronikai mérnöki tudományok
Szakterület = 01. Természettudományok: 01.03. Fizikai tudományok: 01.03.02. Kondenzált anyagok fizikája
Típus = Folyóiratcikk
Cím:
Robustness of majority gates based on nanomagnet logic
Létrehozó:
Gonelli M
Fin S
Carlotti G
Dey H
Csaba György
Porod W
Bernstein GH
Bisero D
Dátum:
2018
Téma:
01.03.02. Kondenzált anyagok fizikája
02.02.01. Villamos- és elektronikai mérnöki tudományok
Tartalmi leírás:
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.
Nyelv:
angol
angol
Típus:
Folyóiratcikk
PeerReviewed
Formátum:
text
Azonosító:
Gonelli M; Fin S; Carlotti G; Dey H; Csaba György; Porod W; Bernstein GH; Bisero D: Robustness of majority gates based on nanomagnet logic. JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 460. pp. 432-437. ISSN 0304-8853 (2018)
MTMT:3400173 10.1016/j.jmmm.2018.04.026
Kapcsolat:
MTMT:3400173 10.1016/j.jmmm.2018.04.026