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Large Enhancement of Ferromagnetism under a Collective Strong Coupling of YBCO Nanoparticles.

ABSTRACT: Light-Matter strong coupling in the vacuum limit has been shown, over the past decade, to enhance material properties. Oxide nanoparticles are known to exhibit weak ferromagnetism due to vacancies in the lattice. Here we report the 700-fold enhancement of the ferromagnetism of YBa₂Cu₃O_7-x nanoparticles under a cooperative strong coupling at room temperature. The magnetic moment reaches 0.90 μ_B/mol, and with such a high value, it competes with YBa₂Cu₃O_7-x superconductivity at low temperatures. This strong ferromagnetism at room temperature suggest that strong coupling is a new tool for the development of next-generation magnetic and spintronic nanodevices.

SUBMITTER: Thomas A

PROVIDER: S-EPMC8161414 | biostudies-literature | 2021 May

REPOSITORIES: biostudies-literature

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Large Enhancement of Ferromagnetism under a Collective Strong Coupling of YBCO Nanoparticles.

Thomas Anoop A Devaux Eloise E Nagarajan Kalaivanan K Rogez Guillaume G Seidel Marcus M Richard Fanny F Genet Cyriaque C Drillon Marc M Ebbesen Thomas W TW

Nano letters 20210504 10

Light-Matter strong coupling in the vacuum limit has been shown, over the past decade, to enhance material properties. Oxide nanoparticles are known to exhibit weak ferromagnetism due to vacancies in the lattice. Here we report the 700-fold enhancement of the ferromagnetism of YBa2Cu3O7-x nanoparticles under a cooperative strong coupling at room temperature. The magnetic moment reaches 0.90 μB/mol, and with such a high value, it competes with YB ...[more]

PMID: 33945283

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