Quantum oscillation evidence of topological semimetal phase in ZrSnTe

TL;DR

This study provides experimental evidence of topological non-trivial bands in ZrSnTe using quantum oscillation measurements, revealing its three-dimensional Fermi surface and topological semimetal phase.

Contribution

First direct experimental observation of topological semimetal phase in ZrSnTe via quantum oscillations, elucidating its 3D Fermi surface topology.

Findings

Evidence of topological non-trivial bands in ZrSnTe

Revealed 3D Fermi surface topology

Confirmed layered WHM-type topological semimetal characteristics

Abstract

The layered WHM - type (W=Zr/Hf/La, H=Si/Ge/Sn/Sb, M=S/Se/Te) materials represent a large family of topological semimetals, which provides an excellent platform to study the evolution of topological semimetal state with the fine tuning of spin-orbit coupling and structural dimensionality for various combinations of W, H and M elements. In this work, through high field de Haas-van Alphen (dHvA) quantum oscillation studies, we have found evidence for the predicted topological non-trivial bands in ZrSnTe. Furthermore, from the angular dependence of quantum oscillation frequency, we have revealed the three-dimensional Fermi surface topologies of this layered material owing to strong interlayer coupling.