Transverse Rashba effect and unconventional magnetocrystalline anisotropy in graphene-nanoribbon-based centrosymmetric antiferromagnet

Xie, Wei-Feng; Song, Yu; Zuo, Xu

doi:10.1016/j.carbon.2021.09.057

Cited by 6 publications

(4 citation statements)

References 48 publications

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“…Cr 2 I 3 Se 3 exhibits a negative MAE and remains resistant to thermal disturbance within the strain range of −6% to 6%. In addition, due to the localization of the transition metal d orbitals, the weight of atomic orbitals on the flat band can reflect their contribution well Figure S23 shows a significant energy difference between the occupied and unoccupied states of the d orbitals of Mn and Cr, and the corresponding weight distribution is not sensitive to strain.…”

Section: Resultsmentioning

confidence: 99%

“…In addition, due to the localization of the transition metal d orbitals, the weight of atomic orbitals on the flat band can reflect their contribution well. 72 Figure S23 shows a significant energy difference between the occupied and unoccupied states of the d orbitals of Mn and Cr, and the corresponding weight distribution is not sensitive to strain. This indicates that their contribution to the MAE is relatively small, consistent with the previous results.…”

Section: Electronic and Magnetic Properties Tuned By Strainmentioning

confidence: 99%

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Two-Dimensional Room-Temperature Magnetism in Janus Mn₂I₃S₃ and Cr₂I₃Se₃ Monolayers with Tunable Magnetic Properties by Strain Engineering

Xu,

Yan,

Wang

et al. 2024

ACS Appl. Mater. Interfaces

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Exploring room-temperature intrinsic magnetism in two-dimensional (2D) materials for nanoscale spintronic devices has garnered significant interest. Achieving a high Curie temperature and substantial spin polarization in 2D ferromagnetic materials remains challenging. Drawing inspiration from the substantial enhancement of the Curie temperature observed in ferromagnetic CrIS monolayers by manipulating the covalent nature of Cr−S bonds, our study systematically delves into the electronic structure and magnetic properties of Janus M 2 X 3 Y 3 (M = V, Cr, Mn, Fe, and Co; X = Cl, Br, I; Y = S, Se, and Te) monolayers through first-principles calculations. Our findings reveal that 15 kinds of these monolayers exhibit dynamic and thermodynamic stability while displaying diverse electronic and ferromagnetic characteristics. Notably, Mn 2 I 3 S 3 demonstrates half-metallicity and in-plane magnetic anisotropy, while Cr 2 I 3 Se 3 exhibits a half-semiconductor and perpendicular magnetic anisotropy. Consequently, Mn 2 I 3 S 3 transforms from in-plane to perpendicular magnetic anisotropy through strain manipulation. Cr 2 I 3 Se 3 , under strain, transforms from a half-semiconductor to a bipolar magnetic semiconductor. The strong coupling caused by the M−Y bonds makes them have a Curie temperature higher than room temperature. The unique magnetic properties exhibited by the 2D Janus Mn 2 I 3 S 3 and Cr 2 I 3 Se 3 magnets hold promise for applications in spintronics. Our study provides a foundational understanding for future experimental explorations in this exciting research area.

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Section: Resultsmentioning

confidence: 99%

Section: Electronic and Magnetic Properties Tuned By Strainmentioning

confidence: 99%

Two-Dimensional Room-Temperature Magnetism in Janus Mn₂I₃S₃ and Cr₂I₃Se₃ Monolayers with Tunable Magnetic Properties by Strain Engineering

Xu,

Yan,

Wang

et al. 2024

ACS Appl. Mater. Interfaces

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“…The Rashba effect is a phenomenon emerging in systems with a high spin–orbital coupling and broken inversion symmetry. , Gold element is inherent with a strong spin–orbital coupling, while the boundary between the monoatomic-layered gold membrane and the surrounding <011> crystal breaks the up–down inversion symmetry of the hexagonal lattice of the monoatomic-layered membrane, resulting in a Rashba-effect spin splitting . As the orientation switches, the symmetry of the gold membrane is nearly mirrored along the (001) plane of the surrounding gold crystal (indicated by the mirrored [010] m and [100] m directions in Figure a and the yz -plane in Supporting Information, Figure S5, using the basic vectors defined in Figure e), accordingly, the spin splitting is also mirrored (Figure a).…”

Section: Resultsmentioning

confidence: 99%

Direct Atomic Observation of Reversible Orientation Switch in Monoatomic-Layered Gold Membrane Conducted by Dynamic Vortex

Chen

Wang

Hao

et al. 2022

ACS Appl. Mater. Interfaces

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Controlling the material structure at an atomic scale to tune their physicochemical and nanoengineering properties is a major driving force of nanotechnology. However, manipulating the structural variation in monoatomic-layered metals remains a challenge, hindering the full application of their novel properties. Here, we show by experiments and simulations that a reversible orientation rotation of monoatomic-layered gold membrane embedded in the gold crystal is performed through dynamic vortexing that is comprised of the circular motion of atoms. A pair of dynamic vortices are successively generated and together span the entire gold membrane to accomplish the orientation switch. Density functional theory calculations demonstrate that the gold membrane exhibits a Rashba-type spin splitting, while the spin direction reversibly flips with the switching orientation of the gold membrane. The results provide a conceptual approach for constructing a novel electronic system with monoatomic-layered metals and the reversible spin-flip has inspiring applications for future spintronics.

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“…In our previous work, [ 20 ] the double‐Gd‐adsorbed ZGNR with four zigzag carbon chains (2Gd‐4ZGNR) is constructed and investigated systematically, It is demonstrated that the 1D antiferromagnetic 2Gd‐4ZGNR has an inversion‐symmetrical crystal structure and a narrow bandgap of about 70.77 meV. Herein, we first explore the variations of the TMM of the 2Gd‐4ZGNR under a uniform external transverse electric field (ETEF) and an external perpendicular electric field (EPEF).…”

Section: Introductionmentioning

confidence: 99%

Electric‐Field‐Tunable Bipolar Linear Magnetoelectric Effect in Zigzag Graphene Nanoribbon‐Based Antiferromagnet

Xie,

Qin,

Song

et al. 2023

Physica Rapid Research Ltrs

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Modern electronic devices are moving toward miniaturization and integration. Therefore, achieving electrical control of magnetization effectively in one‐dimensional materials represents a promising field for the practical applications in memory elements. In this study, it is discovered, from first‐principles calculations, that an electric‐field‐tunable bipolar linear magnetoelectric effect can be realized in one‐dimensional antiferromagnet based on double‐Gd‐adsorbed graphene nanoribbon with four zigzag carbon chains (2Gd‐4ZGNR). We find that, compared with the bare 4ZGNR, the adsorption of two Gd atoms on the 4ZGNR reduces the bandgap. As a result, 2Gd‐4ZGNR transits from antiferromagnetic semiconductor to ferrimagnetic metal at a relatively low critical external transverse (perpendicular) electric field, where the net magnetic moment can be induced. The antiferromagnetism and inversion‐symmetrical crystal structure further allow to realize a bipolar linear magnetoelectric effect, where the 2Gd‐4ZGNR form two groups of independent linear magnetic response states, acting as a magnetoelectric memory element.This article is protected by copyright. All rights reserved.

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Transverse Rashba effect and unconventional magnetocrystalline anisotropy in graphene-nanoribbon-based centrosymmetric antiferromagnet

Cited by 6 publications

References 48 publications

Two-Dimensional Room-Temperature Magnetism in Janus Mn₂I₃S₃ and Cr₂I₃Se₃ Monolayers with Tunable Magnetic Properties by Strain Engineering

Two-Dimensional Room-Temperature Magnetism in Janus Mn₂I₃S₃ and Cr₂I₃Se₃ Monolayers with Tunable Magnetic Properties by Strain Engineering

Direct Atomic Observation of Reversible Orientation Switch in Monoatomic-Layered Gold Membrane Conducted by Dynamic Vortex

Electric‐Field‐Tunable Bipolar Linear Magnetoelectric Effect in Zigzag Graphene Nanoribbon‐Based Antiferromagnet

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Transverse Rashba effect and unconventional magnetocrystalline anisotropy in graphene-nanoribbon-based centrosymmetric antiferromagnet

Cited by 6 publications

References 48 publications

Two-Dimensional Room-Temperature Magnetism in Janus Mn2I3S3 and Cr2I3Se3 Monolayers with Tunable Magnetic Properties by Strain Engineering

Two-Dimensional Room-Temperature Magnetism in Janus Mn2I3S3 and Cr2I3Se3 Monolayers with Tunable Magnetic Properties by Strain Engineering

Direct Atomic Observation of Reversible Orientation Switch in Monoatomic-Layered Gold Membrane Conducted by Dynamic Vortex

Electric‐Field‐Tunable Bipolar Linear Magnetoelectric Effect in Zigzag Graphene Nanoribbon‐Based Antiferromagnet

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Two-Dimensional Room-Temperature Magnetism in Janus Mn₂I₃S₃ and Cr₂I₃Se₃ Monolayers with Tunable Magnetic Properties by Strain Engineering

Two-Dimensional Room-Temperature Magnetism in Janus Mn₂I₃S₃ and Cr₂I₃Se₃ Monolayers with Tunable Magnetic Properties by Strain Engineering