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The role of Snell’s law for a magnonic majority gate

In the fifty years since the postulation of Moore’s Law, the increasing energy consumption in silicon electronics has motivated research into emerging devices. An attractive research direction is processing information via the phase of spin waves within magnonic-logic circuits, which function withou...

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Detalles Bibliográficos
Autores principales: Kanazawa, Naoki, Goto, Taichi, Sekiguchi, Koji, Granovsky, Alexander B., Ross, Caroline A., Takagi, Hiroyuki, Nakamura, Yuichi, Uchida, Hironaga, Inoue, Mitsuteru
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2017
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5554295/
https://www.ncbi.nlm.nih.gov/pubmed/28801630
http://dx.doi.org/10.1038/s41598-017-08114-7
Descripción
Sumario:In the fifty years since the postulation of Moore’s Law, the increasing energy consumption in silicon electronics has motivated research into emerging devices. An attractive research direction is processing information via the phase of spin waves within magnonic-logic circuits, which function without charge transport and the accompanying heat generation. The functional completeness of magnonic logic circuits based on the majority function was recently proved. However, the performance of such logic circuits was rather poor due to the difficulty of controlling spin waves in the input junction of the waveguides. Here, we show how Snell’s law describes the propagation of spin waves in the junction of a Ψ-shaped magnonic majority gate composed of yttrium iron garnet with a partially metallized surface. Based on the analysis, we propose a magnonic counterpart of a core-cladding waveguide to control the wave propagation in the junction. This study has therefore experimentally demonstrated a fundamental building block of a magnonic logic circuit.