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Imaging the spin chirality of ferrimagnetic Néel skyrmions stabilized on topological antiferromagnetic Mn3Sn

Journal Article · · Physical Review Materials
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  1. Tsinghua Univ., Beijing (China)
  2. Cornell Univ., Ithaca, NY (United States)
  3. ALBA Synchrotron Light Source, Barcelona (Spain)
  4. Paul Scherrer Inst. (PSI), Villigen (Switzerland)
  5. Foundation for Research and Technology - Hellas (FORTH), Crete (Greece)
  6. Univ. of Messina (Italy)
  7. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Néel skyrmions are generally realized in asymmetric multilayers made of heavy metals (HMs) and ultrathin ferromagnets possessing strong interfacial Dzyaloshinskii-Moriya interactions (iDMIs). Depending on the relative strengths of iDMIs at the interfaces, various types of Néel skyrmions have been suggested, which are typified with characteristically different topological properties and current-driven dynamics. This suggests the importance of a precise quantification of their spin chiralities. In this paper, we explore the possibility of realizing Néel skyrmions in magnetic multilayers without the direct usage of standard HMs. Specifically, through depositing a thin layer of ferrimagnetic (FIM) CoTb layer on top of an antiferromagnetic (AFM) quantum material of composition Mn3Sn, the AFM exchange interaction at the asymmetric interface provides an equivalent iDMI for stabilizing FIM Néel skyrmions. Secondly, through using advanced four-dimensional Lorentz scanning transmission electron microscopy (4D LSTEM), in combination with x-ray magnetic circular dichroism photoemission electron microscopy (XMCD-PEEM), we can directly determine the spin chirality of FIM Néel skyrmions. Finally, the present findings not only broaden the phase space for chiral interfacial magnetism but also provide a possibility for future applications of heavy-metal-free skyrmionic devices.
Research Organization:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
Sponsoring Organization:
USDOE; National Key R&D Program of China; National Natural Science Foundation of China (NSFC); Beijing Natural Science Foundation; Defense Advanced Research Projects Agency (DARPA); National Science Foundation (NSF); Swiss National Science Foundation; Swiss Nanoscience Institute; Korea government; Hellenic Foundation for Research and Innovation (HFRI); General Secretariat for Research and Technology (GSRT)
Grant/Contract Number:
AC02-05CH11231
OSTI ID:
1821152
Journal Information:
Physical Review Materials, Journal Name: Physical Review Materials Journal Issue: 8 Vol. 5; ISSN 2475-9953
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English

References (76)

Do Images of Biskyrmions Show Type‐II Bubbles? journal February 2019
Ferrimagnetic Skyrmions in Topological Insulator/Ferrimagnet Heterostructures journal July 2020
The direct determination of magnetic domain wall profiles by differential phase contrast electron microscopy journal January 1978
Skyrmions in magnetic multilayers journal August 2017
Quantitative Fresnel Lorentz microscopy and the transport of intensity equation journal March 2006
Aberration corrected Lorentz scanning transmission electron microscopy journal May 2015
Pixelated detectors and improved efficiency for magnetic imaging in STEM differential phase contrast journal June 2016
Room-Temperature Skyrmions in an Antiferromagnet-Based Heterostructure journal January 2018
Magnetic skyrmions: advances in physics and potential applications journal June 2017
Spontaneous skyrmion ground states in magnetic metals journal August 2006
Chiral magnetic order at surfaces driven by inversion asymmetry journal May 2007
Real-space observation of a two-dimensional skyrmion crystal journal June 2010
Large anomalous Hall effect in a non-collinear antiferromagnet at room temperature journal October 2015
Emergent phenomena induced by spin–orbit coupling at surfaces and interfaces journal November 2016
Observation of stable Néel skyrmions in cobalt/palladium multilayers with Lorentz transmission electron microscopy journal March 2017
Tailoring the chirality of magnetic domain walls by interface engineering journal October 2013
Magnetic microscopy and topological stability of homochiral Néel domain walls in a Pt/Co/AlOx trilayer journal December 2015
Observation of room-temperature magnetic skyrmions and their current-driven dynamics in ultrathin metallic ferromagnets journal February 2016
Tunable room-temperature magnetic skyrmions in Ir/Fe/Co/Pt multilayers journal July 2017
Evidence for magnetic Weyl fermions in a correlated metal journal September 2017
Nucleation, stability and current-induced motion of isolated magnetic skyrmions in nanostructures journal October 2013
Topological properties and dynamics of magnetic skyrmions journal December 2013
Skyrmions on the track journal March 2013
Additive interfacial chiral interaction in multilayers for stabilization of small individual skyrmions at room temperature journal January 2016
Room-temperature chiral magnetic skyrmions in ultrathin magnetic nanostructures journal January 2016
Antiferromagnetic spintronics journal March 2016
Spontaneous atomic-scale magnetic skyrmion lattice in two dimensions journal July 2011
Direct observation of the skyrmion Hall effect journal September 2016
Large anomalous Nernst effect at room temperature in a chiral antiferromagnet journal July 2017
Current-driven dynamics and inhibition of the skyrmion Hall effect of ferrimagnetic skyrmions in GdFeCo films journal March 2018
Chiral domain walls of Mn3Sn and their memory journal July 2019
Creating zero-field skyrmions in exchange-biased multilayers through X-ray illumination journal February 2020
Discrete Hall resistivity contribution from Néel skyrmions in multilayer nanodiscs journal October 2018
Creation of magnetic skyrmions by surface acoustic waves journal March 2020
Large magneto-optical Kerr effect and imaging of magnetic octupole domains in an antiferromagnetic metal journal January 2018
Antiferromagnetic spin textures and dynamics journal March 2018
Magnetic and magnetic inverse spin Hall effects in a non-collinear antiferromagnet journal January 2019
Electrical manipulation of a topological antiferromagnetic state journal April 2020
A transmission electron microscope study of Néel skyrmion magnetic textures in multilayer thin film systems with large interfacial chiral interaction journal April 2018
Thermal generation, manipulation and thermoelectric detection of skyrmions journal October 2020
Computation of electron‐diffraction patterns in Lorentz electron microscopy of thin magnetic films (abstract) journal April 1991
Room temperature skyrmion ground state stabilized through interlayer exchange coupling journal June 2015
Gyroscopic g factor of rare earth metals journal February 2017
Investigation of the Dzyaloshinskii-Moriya interaction and room temperature skyrmions in W/CoFeB/MgO thin films and microwires journal July 2017
Realization of zero-field skyrmions with high-density via electromagnetic manipulation in Pt/Co/Ta multilayers journal November 2017
Brownian motion of skyrmion bubbles and its control by voltage applications journal January 2019
Formation and magnetic-field stability of magnetic dipole skyrmions and bubbles in a ferrimagnet journal April 2020
Magnetic stripes and skyrmions with helicity reversals journal May 2012
Determination of the magnetic structure of Mn 3 Sn using generalized neutron polarization analysis journal November 1990
Interface-induced chiral domain walls, spin spirals and skyrmions revealed by spin-polarized scanning tunneling microscopy journal September 2014
Topological Weyl semimetals in the chiral antiferromagnetic materials Mn 3 Ge and Mn 3 Sn journal January 2017
Spin Hall effect emerging from a noncollinear magnetic lattice without spin–orbit coupling journal July 2018
Spin-Orbit-Torque Efficiency in Compensated Ferrimagnetic Cobalt-Terbium Alloys journal November 2016
Dynamics of domain-wall motion driven by spin-orbit torque in antiferromagnets journal January 2020
Magnetization dynamics of the ferrimagnet CoGd near the compensation of magnetization and angular momentum journal October 2006
Dzyaloshinskii-Moriya interaction accounting for the orientation of magnetic domains in ultrathin films: Fe/W(110) journal October 2008
Tailoring magnetic energies to form dipole skyrmions and skyrmion lattices journal January 2017
Strong anisotropic anomalous Hall effect and spin Hall effect in the chiral antiferromagnetic compounds Mn 3 X ( X = Ge , Sn, Ga, Ir, Rh, and Pt) journal February 2017
Micromagnetic modeling of terahertz oscillations in an antiferromagnetic material driven by the spin Hall effect journal January 2019
Quantifying chiral exchange interaction for Néel-type skyrmions via Lorentz transmission electron microscopy journal March 2019
Novel Chiral Magnetic Domain Wall Structure in Fe / Ni / Cu ( 001 ) Films journal April 2013
Exchange Bias Driven by Dzyaloshinskii-Moriya Interactions journal November 2013
Field-Dependent Size and Shape of Single Magnetic Skyrmions journal May 2015
Anatomy of Dzyaloshinskii-Moriya Interaction at Co / Pt Interfaces journal December 2015
Dzyaloshinskii-Moriya Interaction across an Antiferromagnet-Ferromagnet Interface journal July 2017
Current-Induced Domain Wall Motion in a Compensated Ferrimagnet journal July 2018
Tuning Magnetic Chirality by Dipolar Interactions journal October 2019
Magnetic Chirality Controlled by the Interlayer Exchange Interaction journal May 2020
Interface-induced phenomena in magnetism journal June 2017
Hybrid chiral domain walls and skyrmions in magnetic multilayers journal July 2018
Skyrmion Lattice in a Chiral Magnet journal February 2009
Writing and Deleting Single Magnetic Skyrmions journal August 2013
Blowing magnetic skyrmion bubbles journal June 2015
Triangular Spin Ordering in Mn 3 Sn and Mn 3 Ge journal March 1979
Magnetic Structure and Weak Ferromagnetism of Mn 3 Sn Studied by Polarized Neutron Diffraction journal August 1982
A transmission electron microscope study of Néel skyrmion magnetic textures in multilayer thin film systems with large interfacial chiral interaction dataset January 2018

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