Intrinsic and extrinsic anomalous transport properties of Heusler ferromagnets Fe${}_2$CoAl and Fe${}_2$NiAl from first principles

Abstract

Recently, Heusler ferromagnets have been found to exhibit unconventional anomalous electric, thermal, and thermoelectric transport properties. In this study, we employed first-principles density functional theory calculations to systematically investigate both intrinsic and extrinsic contributions to the anomalous Hall effect (AHE), anomalous Nernst effect (ANE), and anomalous thermal Hall effect (ATHE) in two Heusler ferromagnets: Fe${}_2$CoAl and Fe${}_2$NiAl. Our analysis reveals that the extrinsic mechanism originating from disorder dominates the AHE and ATHE in Fe${}_2$CoAl , primarily due to the steep band dispersions across the Fermi energy and corresponding high longitudinal electronic conductivity. Conversely, the intrinsic Berry phase mechanism, physically linked to nearly flat bands around the Fermi energy and gapped by spin-orbit interaction band crossings, governs the AHE and ATHE in Fe${}_2$NiAl. With respect to ANE, both intrinsic and extrinsic mechanisms are competing in Fe${}_2$CoAl as well as in Fe${}_2$NiAl. Furthermore, Fe${}_2$CoAl and Fe${}_2$NiAl exhibit tunable and remarkably pronounced anomalous transport properties. For instance, the anomalous Nernst and anomalous thermal Hall conductivities in Fe${}_2$NiAl attain giant values of 8.29 A/Km and 1.19 W/Km, respectively, at room temperature. To provide a useful comparison, we also thoroughly investigated the anomalous transport properties of Co${}_2$MnGa. Our findings suggest that Heusler ferromagnets Fe${}_2$CoAl and Fe${}_2$NiAl are promising candidates for spintronics and spin-caloritronics applications.

arXiv comment9 pages, 5 figures

References in corpus (51)

• Anomalous Hall effect
• Wannier90 as a community code: new features and applications
• Spin Caloritronics
• Giant anomalous Hall effect in a ferromagnetic Kagome-lattice semimetal
• Wave-packet dynamics in slowly perturbed crystals: Gradient corrections and Berry-phase effects
• Anomalous Hall Effect and Magnetic Monopoles in Momentum-Space
• First Principles Calculation of Anomalous Hall Conductivity in Ferromagnetic bcc Fe
• Anomalous Hall effect in ferromagnetic semiconductors
• Large anomalous Hall effect driven by non-vanishing Berry curvature in non-collinear antiferromagnetic Mn3Ge
• Large anomalous Nernst effect at room temperature in a chiral antiferromagnet
• Observation of the Magnon Hall Effect
• Large intrinsic anomalous Hall effect in half-metallic ferromagnet Co3Sn2S2 with magnetic Weyl fermions
• Berry phase effect in anomalous thermoelectric transport
• Universal Scaling Behavior of Anomalous Hall Effect and Anomalous Nernst Effect in Itinerant Ferromagnets
• Giant anomalous Nernst effect and quantum-critical scaling in a ferromagnetic semimetal
• Discovery of topological Weyl fermion lines and drumhead surface states in a room temperature magnet
• Intrinsic vs. extrinsic anomalous Hall effect in ferromagnets
• Anomalous Hall Effect in Weyl Metals
• Topological Nature of Anomalous Hall Effect in Ferromagnet
• Semiclassical theories of the anomalous Hall effect
• Zero-field Nernst effect in a ferromagnetic kagome-lattice Weyl-semimetal Co3Sn2S2
• Anomalous Nernst effect beyond the magnetization scaling relation in the ferromagnetic Heusler compound Co${}_2$MnGa
• Anomalous Nernst and Righi-Leduc effects in Mn${}_3$Sn: Berry curvature and entropy flow
• Anomalous Hall effect in 2D Dirac band: link between Kubo-Streda formula and semiclassical Boltzmann equation approach
• Half-integer quantized anomalous thermal Hall effect in the Kitaev material $\alpha$-RuCl${}_3$
• Mott Relation for Anomalous Hall and Nernst effects in Ga1-xMnxAs Ferromagnetic Semiconductors
• Giant room temperature anomalous Hall effect and magnetically tuned topology in the ferromagnetic Weyl semimetal Co2MnAl
• Energy Magnetization and Thermal Hall Effect
• Anomalous transport due to Weyl fermions in the chiral antiferromagnets Mn${}_3$$X$, $X$ = Sn, Ge
• Thermo-Electric Properties of Quantum Point Contacts
• Fermi level tuning and atomic ordering induced giant anomalous Nernst effect in Co2MnAl1-xSix Heusler alloy
• From colossal to zero: Controlling the Anomalous Hall Effect in Magnetic Heusler Compounds via Berry Curvature Design
• Anomalous transverse response of Co${}_2$MnGa and universality of the room-temperature ${\alpha }_{ij}^A/{\sigma }_{ij}^A$ ratio across topological magnets
• Spin-order dependent anomalous Hall effect and magneto-optical effect in noncollinear antiferromagnets Mn${}_{3}X$N ($X$ = Ga, Zn, Ag, and Ni)
• Phase diagrams of disordered Weyl semimetals
• Anomalous Thermal Hall Effect in an Insulating van der Waals Magnet VI3
• Scattering-Independent Anomalous Nernst Effect in Ferromagnets
• Scattering universality classes of side jump in anomalous Hall effect
• Transition from Intrinsic to Extrinsic Anomalous Hall Effect in the Ferromagnetic Weyl Semimetal PrAlGe${}_{1-x}$Si${}_x$
• Characterization of topological band structures away from the Fermi level by anomalous Nernst measurements
• Anomalous thermal Hall effect and anomalous Nernst effect of CsV${}_3$Sb${}_5$
• Strong anomalous Nernst effect in collinear magnetic Weyl semimetals without net magnetic moments
• Giant Anomalous Nernst Effect in Noncollinear Antiferromagnetic Mn-based Antiperovskite Nitrides
• Fully spin-polarized nodal loop semimetals in alkaline-metal monochalcogenide monolayers
• Enhanced anomalous Nernst effect in disordered Dirac and Weyl materials
• Structural, magnetic, and magnetocaloric properties of Fe2CoAl Heusler nanoalloy
• Sensitivity of anomalous Hall effect to disorder correlations
• Anomalous Hall effect in ferromagnets with Gaussian disorder
• Competition of L21 and XA Ordering in Fe2CoAl Heusler Alloy: A First-Principles Study
• Sign change in the anomalous Hall effect and strong transport effects in a 2D massive Dirac metal due to spin-charge correlated disorder
• Giant anomalous thermal Hall effect in tilted type-I magnetic Weyl semimetal Co${}_3$Sn${}_2$S${}_2$

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