Ultrastrong photon-to-magnon coupling in multilayered heterostructures involving superconducting coherence via ferromagnetic layers

Golovchanskiy, I. A., Abramov, N. N., Stolyarov, V. S., Weides, M. , Ryazanov, V. V., Golubov, A. A., Ustinov, A. V. and Kupriyanov, M. Y. (2021) Ultrastrong photon-to-magnon coupling in multilayered heterostructures involving superconducting coherence via ferromagnetic layers. Science Advances, 7(25), eabe8638. (doi: 10.1126/sciadv.abe8638) (PMID:34144980) (PMCID:PMC8213224)

Abstract

The critical step for future quantum industry demands realization of efficient information exchange between different-platform hybrid systems that can harvest advantages of distinct platforms. The major restraining factor for the progress in certain hybrids is weak coupling strength between the elemental particles. In particular, this restriction impedes a promising field of hybrid magnonics. In this work, we propose an approach for realization of on-chip hybrid magnonic systems with unprecedentedly strong coupling parameters. The approach is based on multilayered microstructures containing superconducting, insulating, and ferromagnetic layers with modified photon phase velocities and magnon eigenfrequencies. The enhanced coupling strength is provided by the radically reduced photon mode volume. Study of the microscopic mechanism of the photon-to-magnon coupling evidences formation of the long-range superconducting coherence via thick strong ferromagnetic layers in superconductor/ferromagnet/superconductor trilayer in the presence of magnetization precession. This discovery offers new opportunities in microwave superconducting spintronics for quantum technologies.

• Item Type: Articles
• Status: Published
• Refereed: Yes
• Glasgow Author(s) Enlighten ID: Weides, Professor Martin
• Authors: Golovchanskiy, I. A., Abramov, N. N., Stolyarov, V. S., Weides, M., Ryazanov, V. V., Golubov, A. A., Ustinov, A. V., and Kupriyanov, M. Y.
• College/School: College of Science and Engineering > School of Engineering > Electronics and Nanoscale Engineering
• Journal Name: Science Advances
• Publisher: American Association for the Advancement of Science
• ISSN: 2375-2548
• ISSN (Online): 2375-2548
• Published Online: 18 June 2021
• Copyright Holders: Copyright © 2021 The Authors
• First Published: First published in Science Advances 7(25): eabe8638
• Publisher Policy: Reproduced under a Creative Commons License