Probing the Fermi surface with Quantum Oscillation Measurements in the Dirac semimetal TaNiTe$_5$

TL;DR

This study uses quantum oscillation measurements to map the Fermi surface of the Dirac semimetal TaNiTe$_5$, confirming theoretical predictions and revealing detailed electronic properties.

Contribution

It provides the first detailed experimental mapping of the Fermi surface in TaNiTe$_5$ using quantum oscillation techniques, validating DFT calculations.

Findings

Observation of multiple quantum oscillation frequencies

Confirmation of DFT-predicted Fermi surface topology

Light effective quasiparticle masses

Abstract

We report a detailed investigation of the Fermi surface in the layered Dirac semimetal TaNiTe$_5$. We probed the magnetization, magnetic torque and magnetoresistance in high-quality single crystals. Pronounced Shubnikov - de Haas (SdH) and de Haas - van Alphen (dHvA) oscillations are observed in magnetic fields above 3T and at temperatures of up to 22K. Multiple fundamental frequencies and light effective quasiparticle masses are obtained by fast Fourier transformation (FFT) and Lifshitz-Kosevich (LK) formula fits. The high resolution of the low-temperature FFT spectra allows us to investigate individual peaks in detail for the magnetic fields applied along all three crystallographic axes and the planes in between. Our investigation can confirm the density functional theory (DFT) calculated band structure and its corresponding Fermi surface.