Thickness dependence of the anomalous and topological hall effects in layered Fe3GaTe2

ORAL

Abstract

Fe3GaTe2 is a two-dimensional (2D) van der Waals (vdW) ferromagnet displaying large anomalous and topological hall effects. Here, we report the properties of mechanically exfoliated Fe3GaTe2 grown via a chemical vapor transport (CVT) method whose thickness was determined via atomic force microscopy. Our Lorentz Transmission electron microscopy reveals a large density of skyrmions at temperatures exceeding room temperature. We observe giant anomalous Hall and topological Hall effects in both bulk and exfoliated samples. We will discuss their thickness, temperature and magnet field dependence.

* This work is supported by the Department of Energy, Basic Energy Sciences program, grant # DE-SC0002613 (sample synthesis) and the US National Science Foundation through DMR- 2219003 (device fabrication).

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Presenters

  • Lingrui Mei

    Florida State University

Authors

  • Lingrui Mei

    Florida State University

  • Alex J Moon

    National High Magnetic Field Laboratory

  • Yue Li

    Argonne National Laboratory

  • Sang-Eon Lee

    National High Magnetic Field Laboratory

  • Kice Brown

    Baylor University

  • Gregory T McCandless

    Baylor University

  • Julia Y Chan

    Baylor University

  • Charudatta M Phatak

    Argonne National Laboratory, Argonne National Lab

  • Vadym Kulichenko

    National High Magnetic Field Laboratory

  • Luis Balicas

    National High Magnetic Field Laboratory, Florida State University, National High Magnetic Field Laboratory