Magnetotransport properties in van-der-Waals \textit{\textbf{R}}Te${}_3$ (\textit{\textbf{R}} = La, Ce, Tb)

Abstract

Rare-earth tritellurides are van-der-Waals antiferromagnets which have been attracting attention as materials not only with high mobility, but also with various states such as superconductivity under high pressure, incommensurate charge-density-wave (CDW) phase, and multiple antiferromagnetic phases. In this work, we performed longitudinal resistivity and Hall resistivity measurements simultaneously in exfoliated $R$Te${}_3$ ($R$ =La, Ce, Tb) thin film devices, in order to investigate the influence of magnetic ordering on transport properties in van-der-Waals magnetic materials. We have obtained carrier mobility and concentration using a two-band model, and have observed an increase in carrier mobility in the antiferromagnets CeTe${}_3$ and TbTe${}_3$ due to the magnetic transition. Especially in CeTe${}_3$, the carrier concentration has changed drastically below the magnetic transition temperature, suggesting the interaction between the CDW and antiferromagnetic phases. In addition, the analysis of the Shubnikov-de Haas oscillations in CeTe${}_3$ supports the possibility of Fermi surface modulation by magnetic ordering. This research will pave the way not only for spintronic devices that take advantage of high mobility, but also for the study of the correlation between CDW and magnetism states in low-dimensional materials.

8 pages, 5 figures

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Cited by in corpus (6)

• Revealing Pronounced Electron-Hole Fermi Pockets in the Charge Density Wave Semimetal LaTe3
• Kondo-coupled van der Waals antiferromagnet with high-mobility quasiparticles
• Comparative study of magnetic quantum oscillations in Hall and transverse magnetoresistance
• Versatile multi-q antiferromagnetic charge order in correlated vdW metals
• RKKY interaction in the presence of a charge-density-wave order
• Dual Charge-Density-Waves in Two-dimensional DyTe3 and Their Distinct Impacts on Magneto-Transport Properties