Analysis of electrical-field-dependent Dzyaloshinskii-Moriya interaction and magnetocrystalline anisotropy in a two-dimensional ferromagnetic monolayer

Liu, Jie; Shi, Mengchao; Lu, Jiwu; Anantram, M. P.

doi:10.1103/physrevb.97.054416

Cited by 101 publications

(83 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In our case, for V = 1 eV it is nearly 50% higher. We note, however, that our model does not include the dependence of MAE on the electric field, as well as it does not take into account the field-induced inversion symmetry breaking, which is to be accompanied by the Dzyaloshinskii-Moriya interaction [65]. These effects lie beyond the scope of our present work, but can be considered in future studies.…”

Section: Resultsmentioning

confidence: 96%

Orbitally-resolved ferromagnetism of monolayer CrI₃

et al. 2020

View full text Add to dashboard Cite

Few-layer CrI 3 is the most known example among two-dimensional (2D) ferromagnets, which have attracted growing interest in recent years. Despite considerable efforts and progress in understanding the properties of 2D magnets both from theory and experiment, the mechanism behind the formation of in-plane magnetic ordering in chromium halides is still under debate. Here, we propose a microscopic orbitally-resolved description of ferromagnetism in monolayer CrI 3 . Starting from first-principles calculations, we construct a low-energy model for the isotropic Heisenberg exchange interactions. We find that there are two competing contributions to the long-range magnetic ordering in CrI 3 : (i) Antiferromagnetic Anderson's superexchange between half-filled t 2g orbitals of Cr atoms; and (ii) Ferromagnetic exchange governed by the Kugel-Khomskii mechanism, involving the transitions between half-filled t 2g and empty e g orbitals. Using numerical calculations, we estimate the exchange interactions in momentum-space, which allows us to restore the spin-wave spectrum, as well as estimate the Curie temperature. Contrary to the nearest-neighbor effective models, our calculations suggest the presence of sharp resonances in the spin-wave spectrum at 5-7 meV, depending on the vertical bias voltage. Our estimation of the Curie temperature in monolayer CrI 3 yields 55-65 K, which is in good agreement with experimental data.

show abstract

Section: Resultsmentioning

confidence: 96%

Orbitally-resolved ferromagnetism of monolayer CrI₃

et al. 2020

View full text Add to dashboard Cite

show abstract

“…These results are consistent with previous theoretical results. 12,13,19,24 When forming CrI 3 /WSe 2 heterostructures, the inter-layer van de Waals interaction makes both the bond length and the bond angles of CrI 3 slightly changed. As shown in Fig.…”

Section: Resultsmentioning

confidence: 99%

“…The bond angle of a and b accounts the ferromagnetic superexchange symmetry. 24 Therefore, the electronic properties and magnetic properties of CrI 3 in heterostructure are supposed to be different from those of monolayer CrI 3 .…”

Section: Resultsmentioning

confidence: 99%

Interface depended electronic and magnetic properties of vertical CrI₃/WSe₂ heterostructures

Wang

et al. 2019

RSC Adv.

View full text Add to dashboard Cite

show abstract

“…[138] The magnetic properties of monolayer CrI 3 are effectively modulated by carrier doping, where hole (electron) doping displays beneficial (harmful) impacts on the magnetic properties (Figure 11a,b). [139] For bilayer CrI 3 , the breaking of both time-reversal and spatial-reversal symmetry leads to the presence of linear magnetoelectric effect, [23,120,140] which means that the magnetization can be induced by electric field and vice versa. As illustrated in Figure 11c, the magnetization of bilayer CrI 3 shows no dependence on electric field at the spin-polarized state, while it varies linearly with electric field at the AFM state.…”

Section: Electrical Modulationmentioning

confidence: 99%

van der Waals Magnets: Material Family, Detection and Modulation of Magnetism, and Perspective in Spintronics

2020

View full text Add to dashboard Cite

van der Waals (vdW) materials exhibit great potential in spintronics, arising from their excellent spin transportation, large spin–orbit coupling, and high‐quality interfaces. The recent discovery of intrinsic vdW antiferromagnets and ferromagnets has laid the foundation for the construction of all‐vdW spintronic devices, and enables the study of low‐dimensional magnetism, which is of both technical and scientific significance. In this review, several representative families of vdW magnets are introduced, followed by a comprehensive summary of the methods utilized in reading out the magnetic states of vdW magnets. Thereafter, it is shown that various electrical, mechanical, and chemical approaches are employed to modulate the magnetism of vdW magnets. Finally, the perspective of vdW magnets in spintronics is discussed and an outlook of future development direction in this field is also proposed.

show abstract

Analysis of electrical-field-dependent Dzyaloshinskii-Moriya interaction and magnetocrystalline anisotropy in a two-dimensional ferromagnetic monolayer

Cited by 101 publications

References 17 publications

Orbitally-resolved ferromagnetism of monolayer CrI₃

Orbitally-resolved ferromagnetism of monolayer CrI₃

Interface depended electronic and magnetic properties of vertical CrI₃/WSe₂ heterostructures

van der Waals Magnets: Material Family, Detection and Modulation of Magnetism, and Perspective in Spintronics

Contact Info

Product

Resources

About

Analysis of electrical-field-dependent Dzyaloshinskii-Moriya interaction and magnetocrystalline anisotropy in a two-dimensional ferromagnetic monolayer

Cited by 101 publications

References 17 publications

Orbitally-resolved ferromagnetism of monolayer CrI3

Orbitally-resolved ferromagnetism of monolayer CrI3

Interface depended electronic and magnetic properties of vertical CrI3/WSe2 heterostructures

van der Waals Magnets: Material Family, Detection and Modulation of Magnetism, and Perspective in Spintronics

Contact Info

Product

Resources

About

Orbitally-resolved ferromagnetism of monolayer CrI₃

Orbitally-resolved ferromagnetism of monolayer CrI₃

Interface depended electronic and magnetic properties of vertical CrI₃/WSe₂ heterostructures