Unusual magnetic and transport properties in HoMn6Sn6 kagome magnet

Firoza Kabir, Randall Filippone, Gyanendra Dhakal, Y. Lee, Narayan Poudel, Jacob Casey, Anup Pradhan Sakhya, Sabin Regmi, Robert Smith, Pietro Manfrinetti, Liqin Ke, Krzysztof Gofryk, Madhab Neupane, and Arjun K. Pathak
Phys. Rev. Materials 6, 064404 – Published 7 June 2022
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Abstract

With intricate lattice structures, kagome materials are an excellent platform to study various fascinating topological quantum states. In particular, kagome materials, revealing large responses to external stimuli such as pressure or magnetic field, are subject to special investigation. Here we study the kagome-net HoMn6Sn6 magnet that undergoes paramagnetic to ferrimagnetic transition (below 376 K) and reveals spin-reorientation transition below 200 K. In this compound, we observe the topological Hall effect and substantial contribution of anomalous Hall effect above 100 K. We unveil the pressure effects on magnetic ordering at a low magnetic field from the pressure tunable magnetization measurement. By utilizing high-resolution angle-resolved photoemission spectroscopy, Dirac-like dispersion at the high-symmetry point K is revealed in the vicinity of the Fermi level, which is well supported by the first-principles calculations. Our investigation will pave the way to understanding the magnetotransport and electronic properties of various rare-earth-based kagome magnets.

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  • Received 2 November 2021
  • Accepted 18 May 2022

DOI:https://doi.org/10.1103/PhysRevMaterials.6.064404

©2022 American Physical Society

Physics Subject Headings (PhySH)

Condensed Matter, Materials & Applied Physics

Authors & Affiliations

Firoza Kabir1, Randall Filippone2, Gyanendra Dhakal1, Y. Lee3, Narayan Poudel4, Jacob Casey2, Anup Pradhan Sakhya1, Sabin Regmi1, Robert Smith1, Pietro Manfrinetti5,6, Liqin Ke3, Krzysztof Gofryk4, Madhab Neupane1,*, and Arjun K. Pathak2,†

  • 1Department of Physics, University of Central Florida, Orlando, Florida 32816, USA
  • 2Department of Physics, SUNY Buffalo State, Buffalo, New York 14222, USA
  • 3Ames Laboratory, US Department of Energy, Ames, Iowa 50011, USA
  • 4Idaho National Laboratory, Idaho Falls ID 83402, USA
  • 5Department of Chemistry, University of Genova, 16146 Genova, Italy
  • 6Institute SPIN-CNR, 16152 Genova, Italy

  • *Corresponding author: madhab.neupane@ucf.edu
  • Corresponding author: pathakak@buffalostate.edu

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Issue

Vol. 6, Iss. 6 — June 2022

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