Current-Induced Nucleation and Dynamics of Skyrmions in a 
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-based Heusler Alloy

Akhtar, Waseem; Hrabec, Aleš; Chouaieb, S.; Haykal, Angela; Gross, I.; Belmeguenai, M.; Gabor, M. S.; Shields, Brendan; Maletinsky, Patrick; Thiaville, A.; Rohart, Stanislas; Jacques, Vincent

doi:10.1103/physrevapplied.11.034066

Cited by 30 publications

(29 citation statements)

References 42 publications

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“…24,25 Several techniques such as Photo Emission Electron Microscopy (PEEM) 5 or Electron Holography (EH) 26 are commonly used to study magnetic configurations of individual nano-objects. Nevertheless, the family of Scanning Probe Microscopy techniques (Spin Polarized Scanning Tunneling Microscopy, SP-STM, 27 Magnetic Exchange Force Microscopy, MExFM, 28,29 Magnetic Force Microscopy, MFM, 30 and NV-magnetometry 31 ) provide higher resolution images as well as remarkable sensitivity.…”

Section: Introductionmentioning

confidence: 99%

Half-hedgehog spin textures in sub-100 nm soft magnetic nanodots

et al. 2020

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Section: Introductionmentioning

confidence: 99%

Half-hedgehog spin textures in sub-100 nm soft magnetic nanodots

et al. 2020

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“…[129] Moreover, the interfacial Dzyaloshinskii-Moriya interaction (iDMI) was investigated in CFA ultrathin films of various thicknesses and with various buffer layers by measuring spin waves with Brillouin light scattering (BLS). [130,131] And the current-induced dipolar magnetic skyrmions in Co-based Heusler alloy CFA at room temperature have been reported by Husain et al [132] and Akhtar et al [133] Although they did not observe a clear skyrmion Hall effect [134] in this system due to the pinning effects, it is still very promising to explore the efficient skyrmion motion in Heusler alloys where the stabilization of magnetic skyrmions under ambient conditions is possible.…”

Section: Hall (And Related) Effectsmentioning

confidence: 60%

“…This complex behavior of thermoelectric effects during magnetization reversal still needs to be understood, but it is very likely linked to non-trivial spin textures in the film. Akhtar et al [133] have detected current-induced dipolar magnetic skyrmions in Co-based Heusler alloy CFA at room temperature, thus, looking for the TNE and heat-driven skyrmion motion (skyrmion Nernst effect) in this Heusler alloy would be very interesting.…”

Section: Other Non-trivial Nernst Effectsmentioning

confidence: 99%

“…Akhtar et al. [ 133 ] have detected current‐induced dipolar magnetic skyrmions in Co‐based Heusler alloy CFA at room temperature, thus, looking for the TNE and heat‐driven skyrmion motion (skyrmion Nernst effect) in this Heusler alloy would be very interesting.…”

Section: Anomalous Nernst (And Related) Effects In Heusler Alloysmentioning

confidence: 99%

“…[ 132 ] and Akhtar et al. [ 133 ] Although they did not observe a clear skyrmion Hall effect [ 134 ] in this system due to the pinning effects, it is still very promising to explore the efficient skyrmion motion in Heusler alloys where the stabilization of magnetic skyrmions under ambient conditions is possible.…”

Section: Magnetic Thermoelectric and Transport Properties Of Co‐basementioning

confidence: 99%

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Spin‐Dependent Thermoelectric Transport in Cobalt‐Based Heusler Alloys

Granville

2020

Annalen der Physik

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Sitting at the intersection of spintronics and thermoelectricity, research investigating the coupling of thermoelectric, magnetic, and electrical transport properties in materials has recently found that the ferromagnetic Heusler alloys are the ideal testbeds. These materials have attracted a lot of attention due to their useful magnetotransport properties and the possibility of tailoring these properties by modifying their composition or producing heterostructures. With the diverse range of interesting phenomena in the Heusler alloys, ferromagnetic Heusler alloys are also ideal candidates for engineering spin caloritronic devices that can take advantage of the interplay of the physics of heat flow, magnetism, and electric potential. The fundamental physical concepts important to spin-dependent thermoelectrics research are introduced and recent studies of several ferromagnetic Heusler compounds are reviewed, highlighting some exceptional latest experiments on half-metallic Co 2 TiSn and the ferromagnetic Weyl semimetal Co 2 MnGa. Furthermore, the potential to generate useful magnetothermoelectric voltages in electronic devices based on the anomalous Nernst effect is discussed.

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Rare‐Earth Permanent Magnet SmCo₅ for Chiral Interfacial Spin‐Orbitronics

Zhou

Wang

Zhang

et al. 2021

Adv Funct Materials

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Interfacially asymmetric magnetic multilayers made of heavy metal/ferromagnet have attracted considerable attention in the spintronics community for accommodating spin-orbit torques and meanwhile for hosting chiral spin textures. In these multilayers, 1 the accompanied interfacial Dzyaloshinskii-Moriya interaction (iDMI) permits the formation of Néel-type spin textures. While significant progresses have been made in Co, CoFeB, Co 2 FeAl, CoFeGd based multilayers, it would be intriguing to identify new magnetic multilayers which could enable spin-torque controllability and meanwhile host nanoscale skyrmions. In this report, we first synthesize thin films made of permanent magnet SmCo 5 with perpendicular magnetic anisotropy, in which the deterministic spin-orbit torque (SOT) switching, enabled by the spin Hall effect, in Pt/SmCo 5 /Ta trilayer is demonstrated. Further, we show the stabilization of roomtemperature skyrmions with diameters approximately 100 nm in [Pt/SmCo 5 /Ta] 15 , together with a skyrmionium-like spin texture in [Pt/SmCo 5 /Ir] 15 multilayers. Based on the material specific parameters, micromagnetic simulations are also carried out.Results of which confirm the presence of chiral spin textures in this new material family. Through interfacial engineering, our results thus demonstrate that rare earth permanent magnet could be a new platform for studying the interfacial chiral spintronics.

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Current-Induced Nucleation and Dynamics of Skyrmions in a Co -based Heusler Alloy

Cited by 30 publications

References 42 publications

Half-hedgehog spin textures in sub-100 nm soft magnetic nanodots

Half-hedgehog spin textures in sub-100 nm soft magnetic nanodots

Spin‐Dependent Thermoelectric Transport in Cobalt‐Based Heusler Alloys

Rare‐Earth Permanent Magnet SmCo₅ for Chiral Interfacial Spin‐Orbitronics

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Current-Induced Nucleation and Dynamics of Skyrmions in a Co -based Heusler Alloy

Cited by 30 publications

References 42 publications

Half-hedgehog spin textures in sub-100 nm soft magnetic nanodots

Half-hedgehog spin textures in sub-100 nm soft magnetic nanodots

Spin‐Dependent Thermoelectric Transport in Cobalt‐Based Heusler Alloys

Rare‐Earth Permanent Magnet SmCo5 for Chiral Interfacial Spin‐Orbitronics

Contact Info

Product

Resources

About

Rare‐Earth Permanent Magnet SmCo₅ for Chiral Interfacial Spin‐Orbitronics