Static and dynamic magnetic behavior of YBCO/Co/IrMn heterostructures

The effect of the YBCO superconducting (SC) state on the magnetic properties of as-grown YBCO/Co/IrMn heterostructures has been systematically studied using magnetometry and ferromagnetic resonance. The obtained data showed that the superconductivity of the YBCO substrate strongly affects the ferrom...

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Bibliographic Details
Published in:Journal of applied physics 2024-04, Vol.135 (13)
Main Authors: Sousa, M. A., Honorato, A., Liu, Liying, Merino, I. L. C., Pessoa, M. S., Morais, P. C., Litterst, F. J., Passamani, E. C., Fontes, M. B., Baggio-Saitovitch, E.
Format: Article
Language:English
Subjects:
Coherence length
Ferromagnetic resonance
Ferromagnetism
Heterostructures
Magnetic measurement
Magnetic moments
Magnetic properties
Substrates
Superconductivity
YBCO superconductors
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Summary:The effect of the YBCO superconducting (SC) state on the magnetic properties of as-grown YBCO/Co/IrMn heterostructures has been systematically studied using magnetometry and ferromagnetic resonance. The obtained data showed that the superconductivity of the YBCO substrate strongly affects the ferromagnetic properties of the deposited Co layer deeper (up to 50 nm) than the coherence length of the YBCO ( ≃ 4 nm) by an exchange interaction between the Co magnetic moments and the superconducting pairs at the YBCO/Co interface. The interfacial exchange interaction, switched on while the YBCO enters the SC state, pins Co spins and yields an enhancement of the Co magnetic properties.
ISSN:0021-8979
1089-7550
DOI:10.1063/5.0190087