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An Ideal Test Bed for 2D Magnetism

Phys. Rev. Lett. 127, 037204 (2021)

par Nicolas Laflorencie - 19 juillet 2021

Toutes les versions de cet article : English , français

The monolayer halides CrX3(X=Cl, Br, I) attract significant attention for realizing 2D magnets with genuine long-range order (LRO), challenging the Mermin-Wagner theorem. Building on DFT and QMC simulations, we show that monolayer CrCl3 exhibits tunable magnetic anisotropy upon applying a compressive strain. This opens the possibility to use CrCl3 for producing and studying both ferromagnetic and antiferromagnetic 2D Ising-type LRO as well as the Berezinskii-Kosterlitz-Thouless (BKT) regime of 2D magnetism with quasi-LRO. Our results highlight the eminent suitability of monolayer CrCl3 to achieve very high BKT transition temperatures, around 50 K, due to their singular dependence on the weak easy-plane anisotropy of the material.

This work has been published in Phys. Rev. Lett. 127, 0372041 (2021).

Contact :Nicolas Laflorencie