Visualizing symmetry-breaking electronic orders in epitaxial Kagome magnet FeSn films

Abstract

Kagome lattice hosts a plethora of quantum states arising from the interplay of topology, spin-orbit coupling, and electron correlations. Here, we report symmetry-breaking electronic orders tunable by an applied magnetic field in a model Kagome magnet FeSn consisting of alternating stacks of two-dimensional Fe3Sn Kagome and Sn2 honeycomb layers. On the Fe3Sn layer terminated FeSn thin films epitaxially grown on SrTiO3(111) substrates, we observe trimerization of the Kagome lattice using scanning tunneling microscopy/spectroscopy, breaking its six-fold rotational symmetry while preserving the transitional symmetry. Such a trimerized Kagome lattice shows an energy-dependent contrast reversal in dI/dV maps, which is significantly enhanced by bound states induced by Sn vacancy defects. This trimerized Kagome lattice also exhibits stripe modulations that are energy-dependent and tunable by an applied in-plane magnetic field, indicating symmetry-breaking nematicity from the entangled magnetic and charge degrees of freedom in antiferromagnet FeSn.

References in corpus (20)

• Discovery of unconventional chiral charge order in kagome superconductor KV3Sb5
• Roton pair density wave and unconventional strong-coupling superconductivity in a topological kagome metal
• Cascade of correlated electron states in a kagome superconductor CsV3Sb5
• Discovery of a quantum limit Chern magnet TbMn6Sn6
• Chiral flux phase in the Kagome superconductor AV${}_3$Sb${}_5$
• Discovery of charge density wave in a correlated kagome lattice antiferromagnet
• Interaction-driven topological insulators on the kagome and the decorated honeycomb lattices
• Intertwined magnetism and charge density wave order in kagome FeGe
• Theory of the charge-density wave in $A$V${}_3$Sb${}_5$ kagome metals
• Visualizing Broken Symmetry and Topological Defects in a Quantum Hall Ferromagnet
• Discovery of charge order and corresponding edge state in kagome magnet FeGe
• Imaging tunable quantum Hall broken-symmetry orders in graphene
• Magnetic-field sensitive charge density wave orders in the superconducting phase of UTe2
• Intertwining of magnetism and charge ordering in kagome FeGe
• Spin-polarized imaging of the antiferromagnetic structure and field-tunable bound states in kagome magnet FeSn
• Bond order wave instabilities in doped frustrated antiferromagnets: "Valence bond solids" at fractional filling
• Giant periodic pseudo-magnetic fields in strained kagome magnet FeSn epitaxial films on SrTiO${}_3$(111) substrate
• Bond order wave (BOW) phase of the extended Hubbard model: Electronic solitons, paramagnetism, coupling to Peierls and Holstein phonons
• Nematicity Liquid in a Trimerized-Kagome Antiferromagnet
• Charge density wave-templated spin cycloid in topological semimetal $NdS{b}_{x}T{e}_{2-x-\delta }$

Cited by in corpus (9)

• Kagome metals
• Persistent flat band splitting and strong selective band renormalization in a kagome magnet thin film
• Lattice dynamics study of electron-correlation-induced charge density wave in antiferromagnetic kagome metal FeGe
• Nonlinear optical response in kagome lattice with inversion symmetry breaking
• Correlation stabilized ferromagnetic MnRuAs with distorted kagome lattice
• Reactivity of ultra-thin Kagome Metal FeSn towards Oxygen and Water
• Anisotropic response of defect bound states to magnetic field in epitaxial FeSn films
• Magnetism of kagome metals $\left({\text{Fe}}_{1-x}{\text{Co}}_x\right)\text{Sn}$ studied by $\mu$SR
• Hallmarks of spin textures for high-harmonic generation in two-dimensional materials