Magnetic polaron and antiferro-ferromagnetic transition in doped bilayer CrI${}_3$

Abstract

Gate-induced magnetic switching in bilayer CrI${}_3$ has opened new ways for the design of novel low-power magnetic memories based on van der Waals heterostructures. The proposed switching mechanism seems to be fully dominated by electrostatic doping. Here we explain, by first-principle calculations, the ferromagnetic transition in doped bilayer CrI${}_3$. For the case of a very small electron doping, our calculations predict the formation of magnetic polarons ("ferrons", "fluctuons") where the electron is self-locked in a ferromagnetic droplet in an antiferromagnetic insulating matrix. The self-trapping of holes is impossible, at least, within our approximation.

arXiv comment5 pages, 5 figures

References in corpus (28)

• Quantum ESPRESSO: a modular and open-source software project for quantum simulations of materials
• Layer-dependent Ferromagnetism in a van der Waals Crystal down to the Monolayer Limit
• Discovery of intrinsic ferromagnetism in 2D van der Waals crystals
• Gate-tunable Room-temperature Ferromagnetism in Two-dimensional Fe${}_3$GeTe${}_2$
• Magnetic 2D materials and heterostructures
• Electrical Control of 2D Magnetism in Bilayer CrI3
• Giant Tunneling Magnetoresistance in Spin-Filter van der Waals Heterostructures
• Controlling magnetism in 2D CrI3 by electrostatic doping
• Probing magnetism in 2D van der Waals crystalline insulators via electron tunneling
• Electric-field switching of two-dimensional van der Waals magnets
• Stacking-Dependent Magnetism in Bilayer CrI${}_3$
• On the origin of magnetic anisotropy in two dimensional CrI${}_3$
• Very Large Tunneling Magnetoresistance in Layered Magnetic Semiconductor CrI${}_3$
• Electric-field control of magnetism in few-layered van der Waals magnet
• Probing magnetism in 2D materials at the nanoscale with single spin microscopy
• Stacking tunable interlayer magnetism in bilayer CrI3
• Valley Manipulation by Optically Tuning the Magnetic Proximity Effect in WSe${}_2$/CrI${}_3$ Heterostructures
• Magnon-assisted tunnelling in van der Waals heterostructures based on CrBr3
• Determining the phase diagram of atomically thin layered antiferromagnet CrCl${}_3$
• Van der Waals spin valves
• Interplay between interlayer exchange and stacking in CrI${}_3$ bilayers
• Microscopic understanding of magnetic interactions in bilayer CrI${}_3$
• Micromagnetometry of two-dimensional ferromagnets
• Electrically tunable exchange splitting in bilayer graphene on monolayer Cr${}_2$X${}_2$Te${}_6$ with X=Ge, Si, and Sn
• Low-temperature monoclinic layer stacking in atomically thin CrI${}_3$ crystals
• Probing magnetism via spin dynamics in graphene/2D-ferromagnet heterostructures
• Electron self-trapping at quantum and classical critical points
• Electron self-trapping and fluctuation density-of-states tail at the critical point

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• Atomic-scale Manipulation of Single-Polaron in a Two-Dimensional Semiconductor
• Phonon-mediated dimensional crossover in bilayer CrI3
• Nonequilibrium Hole Dynamics in Antiferromagnets: Damped Strings and Polarons
• Ferroelectrically switchable magnetic multistates in MnBi${}_2$Te${}_4$(Bi${}_2$Te${}_3$)${}_n$ and MnSb${}_2$Te${}_4$(Sb${}_2$Te${}_3$)${}_n$ (n = 0, 1) thin films
• Polaronic and Mott insulating phase of layered magnetic vanadium trihalide VCl3
• The role of correlated hopping in many-body physics of flat-band systems: Nagaoka ferromagnetism
• Electrical tuning of the magnetic properties of 2D magnets: the case of ${\mathrm{Cr}}_2{\mathrm{Ge}}_2{\mathrm{Te}}_6$
• Delving into the anisotropic interlayer exchange in bilayer CrI${}_3$
• Low-frequency and Moiré Floquet engineering: a review
• Spatial structure of magnetic polarons in strongly interacting antiferromagnets
• Environmental Screening and Ligand-Field Effects to Magnetism in CrI${}_3$ Monolayer
• Orbital mixing and strong Hund's coupling stabilize spin order in van der Waals ferromagnet CrI3