Large interfacial spin-orbit torques in layered antiferromagnetic insulator 
<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mi>Ni</mml:mi><mml:mi mathvariant="normal">P</mml:mi><mml:msub><mml:mrow><mml:mi mathvariant="normal">S</mml:mi></mml:mrow><mml:mn>3</mml:mn></mml:msub></mml:math>
/ferromagnet bilayers

Schippers, Casper F.; Swagten, H.J.M.; Guimarães, Marcos H. D.

doi:10.1103/physrevmaterials.4.084007

Cited by 15 publications

(10 citation statements)

References 44 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Another example of interfacial SOT with 2D magnets is given by the SOT results on bilayers of the 3D ferromagnet NiFe and the 2D AF insulator NiPS 3 . 449 As the large SOTs acting on NiFe include components of the different “damping-like” and “field-like” symmetries, they can be ascribed to interfacial SOT. The SOT increases below the Néel temperature of NiPS 3 (170 K), pointing out a possible relation with magnetic ordering.…”

Section: Spintronics: From Fundamentals To Devicesmentioning

confidence: 99%

The Magnetic Genome of Two-Dimensional van der Waals Materials

et al. 2022

View full text Add to dashboard Cite

Magnetism in two-dimensional (2D) van der Waals (vdW) materials has recently emerged as one of the most promising areas in condensed matter research, with many exciting emerging properties and significant potential for applications ranging from topological magnonics to low-power spintronics, quantum computing, and optical communications. In the brief time after their discovery, 2D magnets have blossomed into a rich area for investigation, where fundamental concepts in magnetism are challenged by the behavior of spins that can develop at the single layer limit. However, much effort is still needed in multiple fronts before 2D magnets can be routinely used for practical implementations. In this comprehensive review, prominent authors with expertise in complementary fields of 2D magnetism ( i.e. , synthesis, device engineering, magneto-optics, imaging, transport, mechanics, spin excitations, and theory and simulations) have joined together to provide a genome of current knowledge and a guideline for future developments in 2D magnetic materials research.

show abstract

Section: Spintronics: From Fundamentals To Devicesmentioning

confidence: 99%

The Magnetic Genome of Two-Dimensional van der Waals Materials

et al. 2022

View full text Add to dashboard Cite

show abstract

“…SOT effective fields per unit current density of FeRh derived from harmonic Hall voltage measurements as a function of the temperature T , including (a) damping-like effective field H DL and SOT efficiency ξ SOT and (b) field-like effective field ( H FL ). (c) Plot for various systems with a temperature-tunable SOT, the tunability of the SOT efficiency being defined as the relative change of ξ SOT per unit temperature change |Δξ SOT /Δ T | max (the subscript means the temperature range where the SOT efficiency exhibits the steepest change was considered for each system) against the maximum value of ξ SOT in the whole temperature range of tuning |ξ SOT | max . ,,− …”

Section: Resultsmentioning

confidence: 99%

Efficient Tuning of the Spin–Orbit Torque via the Magnetic Phase Transition of FeRh

et al. 2022

View full text Add to dashboard Cite

The understanding and control of the spin–orbit torque (SOT) are central to antiferromagnetic spintronics. Despite the fact that a giant SOT efficiency has been achieved in numerous materials, its efficient tuning in a given material has not been established. Materials with magnetic phase transitions (MPTs) offer a new perspective, as the SOT efficiency may vary significantly for the different magnetic orderings across the transition, and the transition itself can be readily tuned by various control parameters. This work reports that the SOT efficiency of a FeRh-based perpendicular magnetized heterostructure can be significantly tuned by varying the temperature across the MPT. The SOT efficiency exhibits a temperature hysteresis associated with the first-order nature of the MPT, and its value in the ferromagnetic phase is seen to be enhanced by ∼450%, simply by a lowering of temperature to drive FeRh into the antiferromagnetic phase. Furthermore, current-induced magnetization switching can be achieved without an assistant magnetic field for both ferromagnetic and antiferromagnetic FeRh, with a low critical switching current density for the latter. These results not only directly establish FeRh as an efficient spin generator but also present a strategy to dynamically tune SOT via varying the temperature across MPTs.

show abstract

“…Heterostructures of MnPSe 3 and MoS 2 show a type-II band alignment, important for optics, and a stacking dependent lifting of spin and valley degeneracy in MnPSe 3 [57], potentially interesting for valleytronics applications [58,59]. Moreover, it has been shown that antiferromagnetic FePS 3 increases the coercive field and Curie temperature of the 2D itinerant ferromagnet Fe 3 GeTe 2 [60], while NiPS 3 can be important to tailor interfacial spin-orbit torques [61].…”

Section: Unlike Ferromagnets Antiferromagnetic Monolayersmentioning

confidence: 99%

Proximity effects in graphene on monolayers of transition-metal phosphorus trichalcogenides MPX$_3$

Zollner,

Fabian

2022

Preprint

View full text Add to dashboard Cite

We investigate the electronic band structure of graphene on a series of two-dimensional magnetic transition-metal phosphorus trichalcogenide monolayers, MPX3 with M={Mn,Fe,Ni,Co} and X={S,Se}, with first-principles calculations. A symmetry-based model Hamiltonian is employed to extract orbital parameters and sublattice resolved proximity-induced exchange couplings (λ A ex and λ B ex ) from the low-energy Dirac bands of the proximitized graphene. Depending on the magnetic phase of the MPX3 layer (ferromagnetic and three antiferromagnetic ones), completely different Dirac dispersions can be realized with exchange splittings ranging from 0 to 10 meV. Surprisingly, not only the magnitude of the exchange couplings depends on the magnetic phase, but also the global sign and the type. Important, one can realize uniform (λ A ex ≈ λ B ex ) and staggered (λ A ex ≈ −λ B ex ) exchange couplings in graphene. From selected cases, we find that the interlayer distance, as well as a transverse electric field are efficient tuning knobs for the exchange splittings of the Dirac bands. More specifically, decreasing the interlayer distance by only about 10%, a giant 5-fold enhancement of proximity exchange is found, while applying few V/nm of electric field, provides tunability of proximity exchange by tens of percent. We have also studied the dependence on the Hubbard U parameter and find it to be weak. Moreover, we find that the effect of SOC on the proximitized Dirac dispersion is negligible compared to the exchange coupling.

show abstract

Large interfacial spin-orbit torques in layered antiferromagnetic insulator NiPS3 /ferromagnet bilayers

Cited by 15 publications

References 44 publications

The Magnetic Genome of Two-Dimensional van der Waals Materials

The Magnetic Genome of Two-Dimensional van der Waals Materials

Efficient Tuning of the Spin–Orbit Torque via the Magnetic Phase Transition of FeRh

Proximity effects in graphene on monolayers of transition-metal phosphorus trichalcogenides MPX$_3$

Contact Info

Product

Resources

About