CQC2T Online Seminar: Imaging ultrathin van der Waals magnets with a quantum diamond microscope – Jean-Philippe Tetienne
October 27, 2020 @ 2:00 pm - 3:00 pm
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Speaker: Jean-Philippe Tetienne, University of Melbourne
Research Overview: Imaging ultrathin van der Waals magnets with a quantum diamond microscope
The recent isolation of 2D van der Waals magnetic materials has uncovered rich physics that often differs from the magnetic behavior of their bulk counterparts. However, the microscopic details of fundamental processes such as the initial magnetization or domain reversal, which govern the magnetic hysteresis, remain largely unknown in the ultrathin limit. Here a widefield nitrogen‐vacancy (NV) microscope is employed to directly image these processes in few‐layer flakes of the magnetic semiconductor vanadium triiodide (VI3).
This work illustrates the power of widefield NV microscopy to investigate magnetization processes in van der Waals ferromagnets, which can be used to elucidate the origin of the hard ferromagnetic properties of other materials and explore field‐ and current‐driven domain wall dynamics.
Research link: https://doi.org/10.1002/adma.202003314
Video link: to be provided