Anomalous Hall and Nernst effects in the Two-Dimensional ferromagnetic metal FePd2Te2

Abstract

The transverse thermoelectric effect enables simpler, more flexible thermoelectric devices by generating electricity perpendicular to heat flow, offering promising solutions for waste heat recovery and solid-state cooling applications. Here, we report a striking observation of zero-field anomalous Hall effect (AHE) and anomalous Nernst effect (ANE) below TC in the two-dimensional metallic magnet FePd2Te2. The anomalous Nernst signal Syx^A peaks a maximum value of 0.15 μV/K at 100 K, much larger than that of conventional FM materials. Remarkably, the derived ratio alpha_ij/sigma_ij in FePd2Te2 approaches the fundamental limit of 86 μV/K. Our findings suggest a dominant Berry curvature contribution to the ANE. The observed giant zero-field anomalous Nernst response in 2D FePd2Te2 not only advances fundamental understanding of transverse thermoelectricity in layered magnets, but also provides this material as a promising candidate for practical thermoelectric spintronic applications.

arXiv comment11 pages, 4 figures

References in corpus (24)

• Layer-dependent Ferromagnetism in a van der Waals Crystal down to the Monolayer Limit
• Berry Phase Effects on Electronic Properties
• Discovery of intrinsic ferromagnetism in 2D van der Waals crystals
• Anomalous Hall effect
• Gate-tunable Room-temperature Ferromagnetism in Two-dimensional Fe${}_3$GeTe${}_2$
• Magnetic 2D materials and heterostructures
• Two-Dimensional Itinerant Ising Ferromagnetism in Atomically thin Fe3GeTe2
• Controlling magnetism in 2D CrI3 by electrostatic doping
• Large anomalous Nernst effect at room temperature in a chiral antiferromagnet
• Magnetic Order and Symmetry in the 2D Semiconductor CrSBr
• Observation of Magnetic Skyrmion Bubbles in a van der Waals ferromagnet Fe3GeTe2
• Néel-type skyrmion in WTe2/Fe3GeTe2 van der Waals heterostructure
• Zero-field Nernst effect in a ferromagnetic kagome-lattice Weyl-semimetal Co3Sn2S2
• Magnetic structure and phase stability of the van der Waals bonded ferromagnet Fe3-xGeTe2
• Antisymmetric magnetoresistance in van der Waals Fe3GeTe2/graphite/Fe3GeTe2 tri-layer heterostructures
• Large anomalous Nernst effect in a van der Waals ferromagnet Fe${}_3$GeTe${}_2$
• Giant anomalous Nernst effect in the magnetic Weyl semimetal Co3Sn2S2
• Anomalous transverse response of Co${}_2$MnGa and universality of the room-temperature ${\alpha }_{ij}^A/{\sigma }_{ij}^A$ ratio across topological magnets
• Anomalous Hall effect in van der Waals bonded ferromagnet Fe${}_{3-x}$GeTe${}_2$
• FePd2Te2: An Anisotropic Two-Dimensional Ferromagnet with One-Dimensional Fe Chains
• Sign-reversed anomalous Nernst effect in the ferromagnetic Weyl-semimetal Fe${}_{3-x}$GeTe${}_2$: the role of Fe vacancies
• Gapped nodal planes drive a large topological Nernst effect in a chiral lattice antiferromagnet
• Anisotropic transport properties and topological Hall effect in the annealed kagome antiferromagnet FeGe
• Modulation of the Nernst Thermoelectrics by Regulating the Anomalous Hall and Nernst Angles