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Updated: Nov 6, 2025

Visualizing Uniaxial-strain Manipulation of Antiferromagnetic Domains in Fe1+YTe Using a Spin-polarized Scanning Tunneling Microscope
Published on: March 24, 2019
Large Enhancement of Ferromagnetism under a Collective Strong Coupling of YBCO Nanoparticles
Anoop Thomas1, Eloise Devaux1, Kalaivanan Nagarajan1
1University of Strasbourg, CNRS, ISIS, 8 allée G. Monge, 67000 Strasbourg, France.
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 YBa2Cu3O7- 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 YBa2Cu3O7- 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.
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