Journal article
Electronic and magnetic properties of hole-doped topological kagome Fe1−xMnxSn thin films
Physical review materials, v 9(7), 074201
08 Jul 2025
Abstract
We have investigated the electronic and magnetic structures of topological kagome Fe1−xMnxSn (0 < x < 0.3) thin films via neutron diffraction, electronic transport measurements, and ab initio density functional theory (DFT) to understand the interplay between hole doping, magnetism, and the electronic structures. Temperature dependent neutron diffraction measurements on parent FeSn reveal the Néel temperature to be TN ∼ 355 K and the underlying A-type antiferromagnetic ordering is associated with a wave vector q = (0 0 1/2). Upon Mn doping to x = 0.15, TN decreases slightly while the magnetic ordering vector remains the same. Resistivity measurements show metallic characteristics and in-plane anisotropy down to 10 K for all the investigated samples. The effects of hole doping are mapped in terms of electronic ground state calculations via DFT which show that the Dirac point is moved closer to the Fermi level (EF) and the flat bands get pushed away from EF upon hole doping. However, a comparison between hole-doped Fe1−xMnxSn and electron-doped Fe1−xCoxSn indicates that the Néel temperature does not scale with the position of EF relative to the flat band. Our results establish the antiferromagnetic state of FeSn and Fe1−xMnxSn films at room temperature, laying the groundwork for future studies of magnetism in kagome heterostructures.
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Details
- Title
- Electronic and magnetic properties of hole-doped topological kagome Fe1−xMnxSn thin films
- Creators
- Rajesh Dutta - Drexel UniversityPrajwal M. Laxmeesha - Drexel University, Philadelphia, PA (United States)Tarush Tandon - Drexel University, Philadelphia, PA (United States)Tessa D. Tucker - Drexel UniversitySharup Sheikh - Temple UniversityUditha M. Jayathilake - Temple UniversityWei Tian - Oak Ridge National LaboratoryAdam A. Aczel - Oak Ridge National LaboratoryTien-Lin Lee - Diamond Light SourceAlexander X. Gray - Temple UniversitySteven J. May - Drexel UniversityDrexel University, Philadelphia, PA (United States)
- Publication Details
- Physical review materials, v 9(7), 074201
- Publisher
- American Physical Society (APS)
- Number of pages
- 8
- Grant note
- U.S. Department of Energy (DOE)Office of Science, Basic Energy Sciences (BES): DE-SC0024204 U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences, Materials Sciences and Engineering Division: DE-SC0024132
This research was primarily supported by the U.S. Department of Energy (DOE), Office of Science, Basic Energy Sciences (BES), under Award No. DE-SC0024204 (neutron scattering, materials synthesis, x-ray and electronic characterization). A portion of this research used resources at the High Flux Isotope Reactor, a DOE Office of Science User Facility operated by the Oak Ridge National Laboratory. The beam time was allocated to VERITAS on Proposal No. IPTS-32816.1. A.X.G., S.S., and U.M.J. acknowledge support from the U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences, Materials Sciences and Engineering Division under Award No. DE-SC0024132. The authors would like to thank Hussein Hijazi at Rutgers University for performing timely RBS experiments. The authors thank Bing Li from ORNL for helping with the calculation of instrument resolution for the instrument VERITAS using TAVI. The authors also acknowledge the characterization facilities at MCC of the College of Engineering at Drexel University.
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Materials Science and Engineering
- Web of Science ID
- WOS:001531359300005
- Scopus ID
- 2-s2.0-105022976720
- Other Identifier
- 991022065142304721
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- Collaboration types
- Domestic collaboration
- International collaboration
- Web of Science research areas
- Materials Science, Multidisciplinary