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Magnetic and Magnetotransport Study on Single Crystals of TbMn<sub>6</sub>Sn<sub>6</sub>

ORAL

Abstract

Recently, transition-metal based kagome magnets, consisting of stacked kagome lattices, have shown to provide a natural platform to study the effect of the interplay between magnetism and electronic topology. For example, the ferromagnets Fe3Sn2 and Co3Sn2S2 and the antiferromagnets Mn3Ge and Mn3Sn have revealed a large observed intrinsic anomalous Hall effect (AHE) and topological band degeneracies. Of particular interest, the ternary kagome magnet TbMn6Sn6 has very recently revealed a large intrinsic Chern gapped phase associated with Landau quantization upon application of a magnetic field at low temperature. Here we present our recent findings on the role of the rare-earth metal terbium in the complex interplay of magnetism and topology in the electronic structure of TbMn6Sn6. The magnetic structure consists of a collinear ferrimagnet below the Curie temperature of 423K and a spin reorientation process at 310K. The intrinsic AHE is negligible at low temperatures but scales non-monotonically with magnetization at higher temperatures leading to the manifestation of an unconventional intrinsic contribution.

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Presenters

  • David Jones

    Physics, George Mason University, Department of Physics and Astronomy, George Mason University

Authors

  • David Jones

    Physics, George Mason University, Department of Physics and Astronomy, George Mason University

  • Peter Siegfried

    Department of Physics and Astronomy, George Mason University

  • Madhav Ghimire

    Central Department of Physics, Tribhuvan University

  • Igor Mazin

    Physics & Astronomy, George Mason University, Department of Physics and Astronomy, George Mason University, George Mason University, Physics and Astronomy, George Mason University, Physics, George Mason University, Department of Physics and Astronomy,, George Mason University, Department of Physics and Astronomy and Quantum Science and Engineering Center, George Mason University – Fairfax, VA, USA

  • Nirmal Jeevi Ghimire

    George Mason University, Argonne National Laboratory, Physics and Astronomy, George Mason University, Department of Physics and Astronomy, George Mason University, Physics, George Mason University