Ferroic orders in two-dimensional transition/rare-earth metal halides

Abstract

Since the discovery of graphene, two-dimensional materials with atomic level thickness have rapidly grown to be a prosperous field of physical science with interdisciplinary interests, for their fascinating properties and broad applications. Very recently, the experimental observation of ferromagnetism in Cr${}_2$Ge${}_2$Te${}_6$ bilayer and CrI${}_3$ monolayer opened a door to pursuit long-absent intrinsic magnetic orders in two-dimensional materials. Meanwhile, the ferroelectricity was also experimentally found in SnTe monolayer and CuInP${}_2$S${}_6$ few layers. The emergence of these ferroic orders in the two-dimensional limit not only brings new challenges to our physical knowledge, but also provides more functionalities for potential applications. Among various two-dimensional ferroic ordered materials, transition/rare-earth metal halides and their derivants are very common. In this Research Update, based on transition/rare-earth metal halides, the physics of various ferroic orders in two-dimensional will be illustrated. The potential applications based on their magnetic and polar properties will also be discussed.

11 pages, 8 figures

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• Quasi-one-dimensional ferroelectricity and piezoelectricity in WO$X_4$ halogens
• Crystal Structures and Phase Transitions of the van-der-Waals Ferromagnet VI3

Cited by in corpus (14)

• Stacking-dependent ferroicity of reversed bilayer: altermagnetism or ferroelectricity
• Phase competition and negative piezoelectricity in interlayer-sliding ferroelectric ZrI${}_2$
• Magneto-optical Kerr effect in ferroelectric antiferromagnetic two-dimensional heterostructures
• Peierls transition driven ferroelasticity in two-dimensional $d$-$f$ hybrid magnet
• Magneto-optical Kerr effect and magnetoelasticity in weak ferromagnetic RuF${}_4$ monolayer
• Gadolinium halide monolayers: a fertile family of two-dimensional 4f magnets
• Ferroelectricity in strained Hf${}_2$CF${}_2$ monolayer
• Multiferroic properties of oxygen functionalized magnetic i-MXene
• Electrical tuning of robust layered antiferromagnetism in MXene monolayer
• Stacking dependent ferroelectricity and antiferroelectricity in quasi-one-dimensional oxyhalides NbO$X_3$
• Oxidation tuning of ferroic transitions in Gd${}_2$C monolayer
• Noncollinear ferrielectricity and hydrogen-induced ferromagnetic polar half-metallicity in MnO${}_3$Cl
• Record-large magnetically driven polarization in room temperature ferromagnets Os$X_2$ monolayers
• Structural dimerization and charge-orbital ordering in a ferromagnetic semiconductor LiV2S4 monolayer