Strain-tunable Dzyaloshinskii-Moriya interaction and skyrmions in two-dimensional Janus 
<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:msub><mml:mi>Cr</mml:mi><mml:mn>2</mml:mn></mml:msub><mml:msub><mml:mi>X</mml:mi><mml:mn>3</mml:mn></mml:msub><mml:msub><mml:mi>Y</mml:mi><mml:mn>3</mml:mn></mml:msub></mml:mrow></mml:math>
 (
<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mi>X</mml:mi><mml:mo>,</mml:mo><mml:mo> </mml:mo><mml:mi>Y</mml:mi></mml:math>
 = Cl, Br, I, 
<

Shen, Zhongxiang; Song, Changsheng; Xue, Yufei; Wu, Zheng; Wang, Jiqing; Zhong, Zhicheng

doi:10.1103/physrevb.106.094403

Cited by 30 publications

(19 citation statements)

References 57 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…3(b) and (c). More importantly, we notice that the strong DMI is mainly associated with the large Δ E SOC of I and Br, rather than that of Mn, which is similar to Cr 2 X 3 Y 3 (X, Y = Cl, Br, I; X ≠ Y) monolayers 50 and ferromagnetic/heavy metal heterostructures. 24…”

Section: Resultsmentioning

confidence: 65%

“…17 When a mirror plane perpendicular to the Mn–Mn bond passes through the middle of this bond, the DMI vector ( d⃑ ij ) for each pair of nearest-neighbor Mn atoms lies in the mirror plane. With the chirality-dependent total energy difference approach, 18,21,23,24,50 d ‖ can be obtained by:where E CW and E ACW are the energies of Mn 2 I 3 Br 3 with clockwise (CW) and anticlockwise (ACW) spin configurations and S is the normalized spin. 24,51 Once d ‖ is obtained, d z can be easily calculated by (ref.…”

Section: Computational Detailsmentioning

confidence: 99%

See 1 more Smart Citation

Spontaneous magnetic merons in a half-metallic Mn₂I₃Br₃ monolayer with easy-plane anisotropy

Shen

Xue

et al. 2022

Phys. Chem. Chem. Phys.

Self Cite

View full text Add to dashboard Cite

show abstract

Section: Resultsmentioning

confidence: 65%

Section: Computational Detailsmentioning

confidence: 99%

Spontaneous magnetic merons in a half-metallic Mn₂I₃Br₃ monolayer with easy-plane anisotropy

Shen

Xue

et al. 2022

Phys. Chem. Chem. Phys.

Self Cite

View full text Add to dashboard Cite

show abstract

Section: Representative Modulation Approachesmentioning

confidence: 99%

Modulation of skyrmionic magnetic textures in two-dimensional vdW materials and their heterostructures

Yao¹,

Hu²,

Dong³

2023

iScience

View full text Add to dashboard Cite

“…A comprehensive material survey has been done by ab initio calculations to explore the DMI in 2D magnets. The family of monolayer Janus vdW magnets has been predicted to possess large enough DMI to allow stable skyrmions [30][31][32][33][34][35]. Néel-type magnetic skyrmions were also observed in Fe 3 GeTe 2 crystals and were attributed to the DMI due to oxidized interfaces [36].…”

Section: Introductionmentioning

confidence: 99%

Tuning the magnetic interactions in van der Waals Fe3GeTe2 heterostructures: A comparative study of ab initio methods

Haldar

Tim

et al. 2023

Phys. Rev. B

View full text Add to dashboard Cite

We investigate the impact of mechanical strain, stacking order, and external electric fields on the magnetic interactions of a two-dimensional (2D) van der Waals heterostructure in which a 2D ferromagnetic metallic Fe 3 GeTe 2 monolayer is deposited on germanene. Three distinct computational approaches based on ab initio methods are used, (i) the Green's function method, (ii) the generalized Bloch theorem, and (iii) the supercell approach, and a careful comparison is given. First, the shell-resolved exchange constants are calculated for the three Fe atoms within the unit cell of the freestanding Fe 3 GeTe 2 monolayer. We find that the results obtained with approaches (i) and (ii) are in good qualitative agreement and also in good qualitative agreement with previously reported values. An electric field of E = ±0.5 V/Å applied perpendicular to the Fe 3 GeTe 2 /germanene heterostructure leads to significant changes in the exchange constants. We show that the Dzyaloshinskii-Moriya interaction (DMI) in Fe 3 GeTe 2 /germanene is mainly dominated by the nearest neighbors, resulting in a good quantitative agreement between approaches (i) and (ii). Furthermore, we demonstrate that the DMI is highly tunable by strain, stacking, and electric field, leading to a large DMI comparable to that of ferromagnetic/heavy metal interfaces, which have been recognized as prototypical multilayer systems to host isolated skyrmions. The geometrical change and hybridization effect explain the origin of the high tunability of the DMI at the interface. The electric-field-driven DMI obtained by approach (iii) is in qualitative agreement with the more accurate ab initio method used in approach (ii). However, the field effect on the DMI is overestimated by approach (iii) by about 50%. This discrepancy is attributed to the different implementations of the electric field and basis sets used in the ab initio methods applied in approaches (ii) and (iii). The magnetocrystalline anisotropy energy (MAE) can also be drastically changed by the application of compressive or tensile strain in the Fe 3 GeTe 2 /germanene heterostructure. The application of an electric field, in contrast, leads only to relatively small changes in the MAE for electric fields of up to 1 V/Å.

show abstract

Strain-tunable Dzyaloshinskii-Moriya interaction and skyrmions in two-dimensional Janus Cr2X3Y3 ( X, Y = Cl, Br, I, <

Cited by 30 publications

References 57 publications

Spontaneous magnetic merons in a half-metallic Mn₂I₃Br₃ monolayer with easy-plane anisotropy

Spontaneous magnetic merons in a half-metallic Mn₂I₃Br₃ monolayer with easy-plane anisotropy

Modulation of skyrmionic magnetic textures in two-dimensional vdW materials and their heterostructures

Tuning the magnetic interactions in van der Waals Fe3GeTe2 heterostructures: A comparative study of ab initio methods

Contact Info

Product

Resources

About

Strain-tunable Dzyaloshinskii-Moriya interaction and skyrmions in two-dimensional Janus Cr2X3Y3 ( X, Y = Cl, Br, I, <

Cited by 30 publications

References 57 publications

Spontaneous magnetic merons in a half-metallic Mn2I3Br3 monolayer with easy-plane anisotropy

Spontaneous magnetic merons in a half-metallic Mn2I3Br3 monolayer with easy-plane anisotropy

Modulation of skyrmionic magnetic textures in two-dimensional vdW materials and their heterostructures

Tuning the magnetic interactions in van der Waals Fe3GeTe2 heterostructures: A comparative study of ab initio methods

Contact Info

Product

Resources

About

Spontaneous magnetic merons in a half-metallic Mn₂I₃Br₃ monolayer with easy-plane anisotropy

Spontaneous magnetic merons in a half-metallic Mn₂I₃Br₃ monolayer with easy-plane anisotropy