Cryogenic hybrid magnonic circuits based on spalled YIG thin films
Document Type
Article
Publication Date
1-14-2025
Abstract
Yttrium iron garnet (YIG) magnonics has garnered significant research interest because of the unique properties of magnons (quasiparticles of collective spin excitation) for signal processing. In particular, hybrid systems based on YIG magnonics show great promise for quantum information science due to their broad frequency tunability and strong compatibility with other platforms. However, their broad applications have been severely constrained by substantial microwave loss in the gadolinium gallium garnet (GGG) substrate at cryogenic temperatures. In this study, we demonstrate that YIG thin films can be spalled from YIG/GGG samples. Our approach is validated by measuring hybrid devices comprising superconducting resonators and spalled YIG films, which exhibit anti-crossing features that indicate strong coupling between magnons and microwave photons. Such new capability of separating YIG thin films from GGG substrates via spalling and the integrated superconductor-YIG devices represent a significant advancement for integrated magnonic devices, paving the way for advanced magnon-based coherent information processing.
Publication Title
Journal of Applied Physics
Recommended Citation
Xu, J.,
Horn, C.,
Jiang, Y.,
Pishehvar, A.,
Li, X.,
Rosenmann, D.,
Han, X.,
Levy, M.,
Guha, S.,
&
Zhang, X.
(2025).
Cryogenic hybrid magnonic circuits based on spalled YIG thin films.
Journal of Applied Physics,
137(2).
http://doi.org/10.1063/5.0247663
Retrieved from: https://digitalcommons.mtu.edu/michigantech-p2/1379