Extend NdJ relationship with the size, multiple exchanges and Dzyaloshinskii-Moriya interaction for Néel skyrmions in hexagonal magnetic interfaces

Zhu, Y.; Fan, J. Y.; Wu, R. Q.

doi:10.1016/j.jmmm.2020.166805

Title: Extend NdJ relationship with the size, multiple exchanges and Dzyaloshinskii-Moriya interaction for Néel skyrmions in hexagonal magnetic interfaces

Abstract

For the integration with other parts of spintronic devices, it is desired to minimize the size of skyrmions to a nanometer scale. To provide a theoretical guidance for this endeavour, we established an extended NdJ relationship between the skyrmion size and fundamental magnetic properties of two-dimensional hexagonal ferromagnetic lattices, including multiple exchanges between different neighbors (J₁-J₄), Dzyaloshinskii-Moriya interactions (d₁ and d₂) and on-site magnetic anisotropy energy. We demonstrated the applicability of this approach through density functional theory and spin spiral calculations for several interface, e.g., Co/Gra, Rh/Gra, Co/Pt₃ and MgO/Co/Pt₃, and showed that the size of Néel skyrmions can be effectively reduced by either enhancing d or more conveniently reducing J through cancelation of J_is.

Authors:

Zhu, Y. ^[1]; Fan, J. Y. ^[1]; Wu, R. Q. ^[2]

Nanjing University of Aeronautics and Astronautics (China)
Univ. of California, Irvine, CA (United States)

Publication Date:: Mon Mar 30 00:00:00 EDT 2020

Research Org.:: Univ. of California, Irvine, CA (United States)

Sponsoring Org.:: USDOE Office of Science (SC)

OSTI Identifier:: 1800324

Alternate Identifier(s):: OSTI ID: 2325353

Grant/Contract Number:: FG02-05ER46237; 11204131; 11974181

Resource Type:: Accepted Manuscript

Journal Name:: Journal of Magnetism and Magnetic Materials

Additional Journal Information:: Journal Volume: 507; Journal Issue: C; Journal ID: ISSN 0304-8853

Publisher:: Elsevier

Country of Publication:: United States

Language:: English

Subject:: 36 MATERIALS SCIENCE; Materials Science; Physics; Skyrmion; Extended NdJ relationship; DFT; Spin spiral

Citation Formats


                    Zhu, Y., Fan, J. Y., and Wu, R. Q. Extend NdJ relationship with the size, multiple exchanges and Dzyaloshinskii-Moriya interaction for Néel skyrmions in hexagonal magnetic interfaces.  United States: N. p., 2020. 
Web.  doi:10.1016/j.jmmm.2020.166805.

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                    Zhu, Y., Fan, J. Y., & Wu, R. Q. Extend NdJ relationship with the size, multiple exchanges and Dzyaloshinskii-Moriya interaction for Néel skyrmions in hexagonal magnetic interfaces.  United States.  https://doi.org/10.1016/j.jmmm.2020.166805

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                    Zhu, Y., Fan, J. Y., and Wu, R. Q. Mon .  
"Extend NdJ relationship with the size, multiple exchanges and Dzyaloshinskii-Moriya interaction for Néel skyrmions in hexagonal magnetic interfaces".  United States.  https://doi.org/10.1016/j.jmmm.2020.166805.  https://www.osti.gov/servlets/purl/1800324.

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@article{osti_1800324,

  title        = {Extend NdJ relationship with the size, multiple exchanges and Dzyaloshinskii-Moriya interaction for Néel skyrmions in hexagonal magnetic interfaces},

  author       = {Zhu, Y. and Fan, J. Y. and Wu, R. Q.},

  abstractNote = {For the integration with other parts of spintronic devices, it is desired to minimize the size of skyrmions to a nanometer scale. To provide a theoretical guidance for this endeavour, we established an extended NdJ relationship between the skyrmion size and fundamental magnetic properties of two-dimensional hexagonal ferromagnetic lattices, including multiple exchanges between different neighbors (J1-J4), Dzyaloshinskii-Moriya interactions (d1 and d2) and on-site magnetic anisotropy energy. We demonstrated the applicability of this approach through density functional theory and spin spiral calculations for several interface, e.g., Co/Gra, Rh/Gra, Co/Pt3 and MgO/Co/Pt3, and showed that the size of Néel skyrmions can be effectively reduced by either enhancing d or more conveniently reducing J through cancelation of Jis.},

  doi          = {10.1016/j.jmmm.2020.166805},

  journal      = {Journal of Magnetism and Magnetic Materials},

  number       = C,

  volume       = 507,

  place        = {United States},

  year         = {Mon Mar 30 00:00:00 EDT 2020},

  month        = {Mon Mar 30 00:00:00 EDT 2020}

}

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Title: Extend NdJ relationship with the size, multiple exchanges and Dzyaloshinskii-Moriya interaction for Néel skyrmions in hexagonal magnetic interfaces

Abstract

Citation Formats

Equilibrium Skyrmion Lattice Ground State in a Polar Easy-plane Magnet journal, August 2017

Controlling Dzyaloshinskii-Moriya Interaction via Chirality Dependent Atomic-Layer Stacking, Insulator Capping and Electric Field journal, August 2018

Formation of magnetic skyrmions with tunable properties in PdFe bilayer deposited on Ir(111) journal, September 2014

Orbital Magnetism in Transition-Metal Clusters: From Hund’s Rules to Bulk Quenching journal, June 2003

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Deposition of metal clusters on single-layer graphene/Ru(0001): Factors that govern cluster growth journal, July 2010

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Path to collapse for an isolated Néel skyrmion journal, June 2016

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Additive interfacial chiral interaction in multilayers for stabilization of small individual skyrmions at room temperature journal, January 2016

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Stabilizing spin spirals and isolated skyrmions at low magnetic field exploiting vanishing magnetic anisotropy journal, March 2018

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Equilibrium Skyrmion Lattice Ground State in a Polar Easy-plane Magnet
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Controlling Dzyaloshinskii-Moriya Interaction via Chirality Dependent Atomic-Layer Stacking, Insulator Capping and Electric Field
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The Skyrmion Switch: Turning Magnetic Skyrmion Bubbles on and off with an Electric Field
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journal, June 2017

Significant Dzyaloshinskii–Moriya interaction at graphene–ferromagnet interfaces due to the Rashba effect
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Tailoring the chirality of magnetic domain walls by interface engineering
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Observation of room-temperature magnetic skyrmions and their current-driven dynamics in ultrathin metallic ferromagnets
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Stabilizing spin spirals and isolated skyrmions at low magnetic field exploiting vanishing magnetic anisotropy
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Tailoring magnetic skyrmions in ultra-thin transition metal films
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Ruderman–Kittel–Kasuya–Yosida Mechanism for Magnetic Ordering of Sparse Fe Adatoms on Graphene
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Stabilization of skyrmion textures by uniaxial distortions in noncentrosymmetric cubic helimagnets
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Multiferroicity and skyrmions carrying electric polarization in GaV ₄ S ₈
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Dynamics of Skyrmion Crystals in Metallic Thin Films
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Effect of interfacial intermixing on the Dzyaloshinskii-Moriya interaction in Pt/Co/Pt
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Anisotropic Superexchange Interaction and Weak Ferromagnetism
journal, October 1960

Giant Magnetic Anisotropy of Transition-Metal Dimers on Defected Graphene
journal, March 2014

Skyrmion instabilities and distorted spiral states in a frustrated chiral magnet
journal, August 2019

Current-Induced Skyrmion Generation through Morphological Thermal Transitions in Chiral Ferromagnetic Heterostructures
journal, October 2018

Role of Anisotropic Exchange Interactions in Determining the Properties of Spin-Glasses
journal, June 1980

Enhanced skyrmion stability due to exchange frustration
journal, September 2017