Local strain-dependent electronic structure and perpendicular magnetic anisotropy of a MnGaN 2D magnetic monolayer

Ma, Yingqiao; Hunt, Diego; Meng, Kyle C.; Erickson, Tyler; Yang, Fengyuan; Barral, María Andrea; Ferrari, V.; Smith, Arthur R.

doi:10.1103/physrevmaterials.4.064006

Cited by 4 publications

(4 citation statements)

References 35 publications

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“…Thus, the resulting Stoner criterion in the P 3̅ m 1 Fe 2 H monolayer accounts for a clear ferromagnetic transition. In addition, we note that the spin polarization ratio at the Fermi level, which can be obtained according to the following formula becomes 77.8% that is smaller than in a half-metal ferromagnet, comparable with 2D-MnGaN (79%), but higher than γ-CoSe (42%), and may be improved by an external regulation, such as a gate voltage and carrier doping.…”

Section: Resultsmentioning

confidence: 86%

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Intrinsic Ferromagnetism in 2D Fe₂H with a High Curie Temperature

Ding

Yan

Bergara

et al. 2022

ACS Appl. Mater. Interfaces

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The rational design of ferromagnetic materials is crucial for the development of spintronic devices. Using first-principles structural search calculations, we have identified 73 two-dimensional transition metal hydrides. Some of them show interesting magnetic properties, even when combined with the characteristics of the electrides. In particular, the P3̅m1 Fe2H monolayer is stabilized in a 1T-MoS2-type structure with a local magnetic moment of 3 μB per Fe atom, whose robust ferromagnetism is attributed to the exchange interaction between neighboring Fe atoms within and between sublayers, leading to a remarkably high Curie temperature of 340 K. On the other hand, it has a large magnetic anisotropic energy and spin-polarization ratio. Interestingly, the above room-temperature ferromagnetism of the Fe2H monolayer is well preserved within a biaxial strain of 5%. The structure and electron property of surface-functionalized Fe2H are also explored. All of these interesting properties make the Fe2H monolayer an attractive candidate for spintronic nanodevices.

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Section: Resultsmentioning

confidence: 86%

“…becomes 77.8% that is smaller than in a half-metal ferromagnet, comparable with 2D-MnGaN (79%), 54 but higher than γ-CoSe (42%), 55 and may be improved by an external regulation, such as a gate voltage and carrier doping.…”

Section: Electronic and Magneticmentioning

confidence: 87%

Intrinsic Ferromagnetism in 2D Fe₂H with a High Curie Temperature

Ding

Yan

Bergara

et al. 2022

ACS Appl. Mater. Interfaces

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“…[28][29][30][31] Strain engineering has been shown to be an effective approach to tune the magnetic properties of nanomaterials by substrate lattice mismatching. 21,28,[32][33][34][35] In particular, the strategies of heavy metal adsorption or the capping effect have also been found to exert a nontrivial influence on the MCA of several magnetic thin films, e.g. FeCo, Mn 3 Ga. 16,[36][37][38] Additionally, the substitutional doping of W into CrI 3 monolayers has been demonstrated to enhance interlayer FM coupling and the Curie temperature (T C ) significantly.…”

Section: Introductionmentioning

confidence: 99%

Tunable magnetocrystalline anisotropy of two-dimensional Fe₃GeTe₂ with adsorbed 5d-transition metal

Yuan

Tan

et al. 2022

Phys. Chem. Chem. Phys.

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“…The strain dependence of magnetic anisotropy is of great importance in the design of novel materials and needs to be tuned to achieve technological applications of magnetic materials. For example, advanced ultrathin spintronic nanodevices with customized electronic and magnetic properties will need a local-strain engineering [1]. Historically, this problem has been recognized in investigations of magnetoelastic parameters in rareearth materials [2][3][4].…”

Section: Introductionmentioning

confidence: 99%

A new theoretical approach to the strain dependence of magnetic crystal-field anisotropy

Stöter

Doerr

Rotter³

2021

Eur. Phys. J. B

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We report on the derivation of analytical equations for ab-initio calculations of the strain dependence of crystal-electric-field (CEF) parameters for arbitrary deformations. The calculation is based on the fundamental assumption that the charge distribution deforms in the same way as the crystal. Based on this deformed-charge model, simple formulas for the practical usage are given for various site symmetries of cubic lattices under uniform strain. These formulas can be used to predict the change of the magnetic crystal-field anisotropy under strain, which is important for the design of magnetic materials and devices. As an example for the power of the method, we present a calculation of the magnetic contribution to the thermal expansion in some rare-earth-based materials.

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Local strain-dependent electronic structure and perpendicular magnetic anisotropy of a MnGaN 2D magnetic monolayer

Cited by 4 publications

References 35 publications

Intrinsic Ferromagnetism in 2D Fe₂H with a High Curie Temperature

Intrinsic Ferromagnetism in 2D Fe₂H with a High Curie Temperature

Tunable magnetocrystalline anisotropy of two-dimensional Fe₃GeTe₂ with adsorbed 5d-transition metal

A new theoretical approach to the strain dependence of magnetic crystal-field anisotropy

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Local strain-dependent electronic structure and perpendicular magnetic anisotropy of a MnGaN 2D magnetic monolayer

Cited by 4 publications

References 35 publications

Intrinsic Ferromagnetism in 2D Fe2H with a High Curie Temperature

Intrinsic Ferromagnetism in 2D Fe2H with a High Curie Temperature

Tunable magnetocrystalline anisotropy of two-dimensional Fe3GeTe2 with adsorbed 5d-transition metal

A new theoretical approach to the strain dependence of magnetic crystal-field anisotropy

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Product

Resources

About

Intrinsic Ferromagnetism in 2D Fe₂H with a High Curie Temperature

Intrinsic Ferromagnetism in 2D Fe₂H with a High Curie Temperature

Tunable magnetocrystalline anisotropy of two-dimensional Fe₃GeTe₂ with adsorbed 5d-transition metal