Three-dimensional electronic structure in ferromagnetic ${\text{Fe}}_3{\text{Sn}}_2$ with breathing kagome bilayers

Abstract

A large anomalous Hall effect (AHE) has been observed in ferromagnetic ${\text{Fe}}_3{\text{Sn}}_2$ with breathing kagome bilayers. To understand the underlying mechanism for this, we investigate the electronic structure of ${\text{Fe}}_3{\text{Sn}}_2$ by angle-resolved photoemission spectroscopy (ARPES). In particular, we use both vacuum ultraviolet light (VUV) and soft x ray (SX), which allow surface-sensitive and relatively bulk-sensitive measurements, respectively, and distinguish bulk states from surface states, which should be unlikely related to the AHE. While VUV-ARPES observes two-dimensional bands mostly due to surface states, SX-ARPES reveals three-dimensional band dispersions with a periodicity of the rhombohedral unit cell in the bulk. Our data show a good consistency with a theoretical calculation based on density functional theory, suggesting a possibility that ${\text{Fe}}_3{\text{Sn}}_2$ is a magnetic Weyl semimetal.

arXiv comment6 pages, 4 figures

References in corpus (25)

• Quantum ESPRESSO: a modular and open-source software project for quantum simulations of materials
• Topological Insulators
• Quantum Spin Hall Effect in Graphene
• Advanced capabilities for materials modelling with Quantum ESPRESSO
• Discovery of a Weyl Fermion Semimetal and Topological Fermi Arcs
• Type-II Weyl Semimetals
• Experimental discovery of Weyl semimetal TaAs
• Theoretical Discovery/Prediction: Weyl Semimetal states in the TaAs material (TaAs, NbAs, NbP, TaP) class
• Chern semi-metal and Quantized Anomalous Hall Effect in HgCr2Se4
• Observation of Weyl nodes in TaAs
• Massive Dirac fermions in a ferromagnetic kagome metal
• Magnetic Weyl Semimetal Phase in a Kagome Crystal
• Evidence for Magnetic Weyl Fermions in a Correlated Metal
• Topological insulator on the kagome lattice
• Topological Weyl semimetals in the chiral antiferromagnetic materials Mn3Ge and Mn3Sn
• Giant and anisotropic many-body spin-orbit tunability in a strongly correlated kagome magnet
• A precise method for visualizing dispersive features in image plots
• Robust Type-II Weyl Semimetal Phase in Transition Metal Diphosphides XP${}_2$ (X = Mo, W)
• Anomalous Hall effect of ferromagnetic Fe3Sn2 single crystal with geometrically frustrated kagome lattice
• A facility for the analysis of the electronic structures of solids and their surfaces by synchrotron radiation photoelectron spectroscopy
• Topological states on the breathing kagome lattice
• Large topological Hall effect in a geometrically frustrated kagome magnet Fe${}_3$Sn${}_2$
• Observation of Weyl nodes in robust type-II Weyl semimetal WP2
• Switchable Weyl nodes in topological Kagome ferromagnet Fe3Sn2
• Functions to map photoelectron distributions in a variety of setups in angle-resolved photoemission spectroscopy

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• Emergent skyrmion-based chiral order in zero-field Heisenberg antiferromagnets on the breathing kagome lattice
• Investigating the magneto-elastic properties in FeSn and Fe${}_3$Sn${}_2$ flat band metals
• Spin waves and orbital contribution to ferromagnetism in a topological metal
• Coherent phonon and unconventional carriers in the magnetic kagome metal Fe${}_3$Sn${}_2$
• Zero-field miniature skyrmion crystal and chiral domain state in breathing-kagome antiferromagnets
• Spontaneous chirality selection and nonreciprocal spin wave in breathing-kagome antiferromagnets at zero field
• Exploring strong electronic correlations in the breathing kagome metal Fe${}_3$Sn
• Kagome edge states under lattice termination, spin-orbit coupling, and magnetic order
• High-pressure modulation of breathing kagome lattice: Cascade of Lifshitz transitions and evolution of the electronic structure