{"database":"biostudies-literature","file_versions":[],"scores":null,"additional":{"submitter":["Zhang H"],"funding":["Fundamental Research Funds for the Central Universities","Division of Materials Sciences and Engineering","National Natural Science Foundation of China","National Key Research and Development Program of China","National Science Foundation"],"pagination":["4689-4695"],"full_dataset_link":["https://www.ebi.ac.uk/biostudies/studies/S-EPMC11951140"],"repository":["biostudies-literature"],"omics_type":["Unknown"],"volume":["25(12)"],"pubmed_abstract":["Crystal defects, whether intrinsic or engineered, drive many fundamental phenomena and novel functionalities of quantum materials. Here, we report symmetry-breaking phenomena induced by Sn vacancy defects on the surface of epitaxial Kagome antiferromagnetic FeSn films using low-temperature scanning tunneling microscopy and spectroscopy. Near the single Sn vacancy, anisotropic quasiparticle interference patterns are observed in the differential conductance d<i>I</i>/d<i>V</i> maps, breaking the 6-fold rotational symmetry of the Kagome layer. Furthermore, the Sn vacancy defects induce bound states that exhibit anomalous Zeeman shift under an out-of-plane magnetic field, where the energy of the bound states moves linearly toward higher energy independent of the direction of the magnetic field. Under an in-plane magnetic field, the shift of the bound state energy also shows a 2-fold oscillating behavior as a function of the azimuth angle. These findings demonstrate defect-enabled new functionalities in Kagome antiferromagnets for potential applications in nanoscale spintronic devices."],"journal":["Nano letters"],"pubmed_title":["Anisotropic Response of Defect Bound States to the Magnetic Field in Epitaxial FeSn Films."],"pmcid":["PMC11951140"],"funding_grant_id":["DUT24LK007","DUT22LAB104","EFMA-1741673","DUT24RC(3)015","DE-SC0017632","DUT22ZD103","12304210","2023YFB3809600"],"pubmed_authors":["Weinert M","Zhang H","Wang Z","Li L"],"additional_accession":[]},"is_claimable":false,"name":"Anisotropic Response of Defect Bound States to the Magnetic Field in Epitaxial FeSn Films.","description":"Crystal defects, whether intrinsic or engineered, drive many fundamental phenomena and novel functionalities of quantum materials. Here, we report symmetry-breaking phenomena induced by Sn vacancy defects on the surface of epitaxial Kagome antiferromagnetic FeSn films using low-temperature scanning tunneling microscopy and spectroscopy. Near the single Sn vacancy, anisotropic quasiparticle interference patterns are observed in the differential conductance d<i>I</i>/d<i>V</i> maps, breaking the 6-fold rotational symmetry of the Kagome layer. Furthermore, the Sn vacancy defects induce bound states that exhibit anomalous Zeeman shift under an out-of-plane magnetic field, where the energy of the bound states moves linearly toward higher energy independent of the direction of the magnetic field. Under an in-plane magnetic field, the shift of the bound state energy also shows a 2-fold oscillating behavior as a function of the azimuth angle. These findings demonstrate defect-enabled new functionalities in Kagome antiferromagnets for potential applications in nanoscale spintronic devices.","dates":{"release":"2025-01-01T00:00:00Z","publication":"2025 Mar","modification":"2025-07-05T03:04:25.245Z","creation":"2025-07-05T03:04:25.245Z"},"accession":"S-EPMC11951140","cross_references":{"pubmed":["40082247"],"doi":["10.1021/acs.nanolett.4c05337"]}}