MBE growth of Kagome magnet FeSn and observation of symmetry-breaking electronic nematicity

Lian Li

doi:10.1117/12.3027787

4 October 2024 MBE growth of Kagome magnet FeSn and observation of symmetry-breaking electronic nematicity

Lian Li

Author Affiliations +

Proceedings Volume PC13119, Spintronics XVII; PC131191H (2024) https://doi.org/10.1117/12.3027787
Event: Nanoscience + Engineering, 2024, San Diego, California, United States

Abstract

We report symmetry-breaking electronic orders tunable by an applied magnetic field in a model antiferromagnetic Kagome magnet FeSn, consisting of alternating stacks of 2D Fe3Sn Kagome and Sn2 honeycomb layers. On Fe3Sn terminated films epitaxially grown on SrTiO3(111) substrates, we observe trimerization of the Kagome lattice by scanning tunneling microscopy/spectroscopy, breaking its six-fold rotational symmetry while preserving the translational symmetry. Such a trimerized Kagome lattice shows an energy-dependent contrast reversal in dI/dV maps, as well as stripe modulations that are energy-dependent and tunable by an applied in-plane magnetic field. These results provide the first direct experimental evidence for symmetry-breaking nematicity arising from the entangled magnetic and charge degrees of freedom in the ground state of Kagome magnet FeSn.

Conference Presentation

Citation Download Citation

Lian Li "MBE growth of Kagome magnet FeSn and observation of symmetry-breaking electronic nematicity", Proc. SPIE PC13119, Spintronics XVII, PC131191H (4 October 2024); https://doi.org/10.1117/12.3027787

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