Magnetic Demultiplexer Circuit with Four Channels
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, DISORDER, AND PHASE TRANSITION IN CONDENSED SYSTEM
Magnetic Demultiplexer Circuit with Four Channels A. Mouadilia,*, A. Akjoujb, E. H. El Boudoutic, and L. Dobrzynskib a Laboratoire
de Physique de la Matière Condensée et Energie Renouvelable, Département de Physique, Faculté des Sciences et Techniques de Mohammedia, Université Hassan II, Casablanca, Morocco b Institut d’Electronique, de Microélectronique et de Nanotechnologie (IEMN), UMR CNRS 8520, Département de Physique, Université Lille, 59655 Villeneuve d’Ascq, France c Laboratoire de Physique de la Matière et du Rayonnement, Département de Physique, Faculté des Sciences, Université Mohammed I, Oujda, Morocco *e-mail: [email protected] Received May 28, 2019; revised September 18, 2019; accepted September 18, 2019
Abstract—We present a magnetic demultiplexer that allows us to transfer a magnon from one guide to another without perturbation the other guides. The proposed devise is formed by introducing a resonant system between two infinite guides. The resonant system has the role of coupling the guides to allow the magnons to pass from one guide to another for a well-defined frequency. The filtered frequency depends on the lengths of the different elements that constitute the system. In the analytical calculations we demonstrate how to choose the geometrical parameters to get total transmission. DOI: 10.1134/S1063776120050076
1. INTRODUCTION The information encoded in a spin wave can be transmitted and processed without the need to move electrical charges. This process is feasible in the magnonic crystals (MCs) where the quasi particles are magnons. This property makes the MCs suitable for guiding and filtering information in different devices [1–9]. In addition to that, the fact that frequencies of spin waves are GHz higher than frequencies of electromagnetic waves, make it possible to minimize the size of the devices used for processing data telecommunication and other similar domains. Spin waves can be used in devices smaller than 10 nm3 [3]. In addition magnon frequencies cover a very wide range from less than GHz to tens of THz. Progress in the field of nanotechnology manufacturing makes it possible to propagate spin waves in MCs with one and two dimensions [10–19]. These experimental works confirm the theoretical studies on the anisotropy of the dispersion relation in magnonic crystals for periodic or quasi-periodic systems with or without defects [3, 14, 20–25]. Spin waves are used in the design of different devices, such as switches [6, 25, 27], couplers [28–30] sensors and demultiplexers [13, 16]. Regarding these two latter works on demultiplexers, Vogt et al. [13] have created an Oersted field to control the configuration of the magnetization and the dispersion of spin waves in a Y-shape structure with or without an external magnetic field. They are able to transfer spin waves from one branch to another branch. In the work of Rana et al. [16] it was demonstrated that one can gen-
erate and control a configurable nanochannel by a voltage-control m
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