Pressure-controlled magnetism in 2D molecular layers

Huang, Yulong; Pathak, Arjun K.; Tsai, Jeng-Yuan; Rumsey, Clayton; Ivill, M.; Kramer, Noah; Hu, Yong; Trebbin, Martin; Yan, Qimin; Ren, Shenqiang

doi:10.1038/s41467-023-38991-8

Cited by 6 publications

(2 citation statements)

References 61 publications

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“…9 This property extends to multilayer materials; in particular, pressure may readily control the interlayer magnetic coupling. 10 In layered magnets, magneto-optical phenomena�linear magnetic dichroism, 11 helical light emission, 12 and magneto-optical Kerr effect 13 �can be remarkably enhanced. 14 Rich phase diagrams are the norm for this class of materials often exhibiting a variety of magnetic quasiparticles 15−18 and complex magnetic orders 19 that can be strongly thickness-dependent.…”

Section: ■ Introductionmentioning

confidence: 99%

“…Layered magnets constitute an important class of compounds renowned for their unconventional physical properties. , The current interest in such materials is spurred by the discovery of two-dimensional (2D) magnetism in a few monolayers (ML) of layered materials. , 2D magnets hold high promise for new quantum phases and applications in ultracompact spintronics. − Their functionality benefits from the high amenability of 2D magnetism to external stimuli such as magnetic and electric fields or pressure . This property extends to multilayer materials; in particular, pressure may readily control the interlayer magnetic coupling . In layered magnets, magneto-optical phenomenalinear magnetic dichroism, helical light emission, and magneto-optical Kerr effectcan be remarkably enhanced .…”

Section: Introductionmentioning

confidence: 99%

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Engineering of a Layered Ferromagnet via Graphitization: An Overlooked Polymorph of GdAlSi

Averyanov,

Sokolov,

Taldenkov

et al. 2024

J. Am. Chem. Soc.

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Layered magnets are stand-out materials because of their range of functional properties that can be controlled by external stimuli. Regretfully, the class of such compounds is rather narrow, prompting the search for new members. Graphitizationstabilization of layered graphitic structures in the 2D limitis being discussed for cubic materials. We suggest the phenomenon to extend beyond cubic structures; it can be employed as a viable route to a variety of layered materials. Here, the idea of graphitization is put into practice to produce a new layered magnet, GdAlSi. The honeycomb material, based on graphene-like layers AlSi, is studied both experimentally and theoretically. Epitaxial films of GdAlSi are synthesized on silicon; the critical thickness for the stability of the layered polymorph is around 20 monolayers. Notably, the layered polymorph of GdAlSi demonstrates ferromagnetism, in contrast to the nonlayered, tetragonal polymorph. The ferromagnetism is further supported by electron transport measurements revealing negative magnetoresistance and the anomalous Hall effect. The results show that graphitization can be a powerful tool in the design of functional layered materials.

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