Giant Periodic Pseudomagnetic Fields in Strained Kagome Magnet FeSn Epitaxial Films on SrTiO(111) Substrate

Overview

Journal Nano Lett

Publisher American Chemical Society

Specialty Biotechnology

Date 2023 Mar 13

PMID 36912449

Authors

Huimin Zhang

Michael Weinert

Lian Li

Affiliations

Soon will be listed here.

Abstract

Quantum materials, particularly Dirac materials with linearly dispersing bands, can be effectively tuned by strain-induced lattice distortions leading to a pseudomagnetic field that strongly modulates their electronic properties. Here, we grow kagome magnet FeSn films, consisting of alternatingly stacked Sn honeycomb (stanene) and FeSn kagome layers, on SrTiO(111) substrates by molecular beam epitaxy. Using scanning tunneling microscopy/spectroscopy, we show that the Sn honeycomb layer can be periodically deformed by epitaxial strain for a film thickness below 10 nm, resulting in differential conductance peaks consistent with Landau levels generated by a pseudomagnetic field greater than 1000 T. Our findings demonstrate the feasibility of strain engineering the electronic properties of topological magnets at the nanoscale.

Citing Articles

Distance-Dependent Evolution of Electronic States in Kagome-Honeycomb Lateral Heterostructures in FeSn.

Pham T, Kang S, Ozbek Y, Yoon M, Zhang P ACS Nano. 2024; 18(12):8768-8776.

PMID: 38488038 PMC: 10976957. DOI: 10.1021/acsnano.3c11381.

Visualizing symmetry-breaking electronic orders in epitaxial Kagome magnet FeSn films.

Zhang H, Oli B, Zou Q, Guo X, Wang Z, Li L Nat Commun. 2023; 14(1):6167.

PMID: 37794009 PMC: 10550950. DOI: 10.1038/s41467-023-41831-4.

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