Regensburg 2022 – wissenschaftliches Programm
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MM: Fachverband Metall- und Materialphysik
MM 28: Transport in Materials: Diffusion / Electrical Transport & Magnetism
MM 28.2: Vortrag
Donnerstag, 8. September 2022, 10:30–10:45, H44
Electronic structure and transport properties of NdTe3 — Kirstine J Dalgaard1, Shiming Lei1, Claudius Müller2, Steffen Wiedmann2, Martin Bremholm3, and •Leslie M Schoop1 — 1Department of Chemistry, Princeton University, Princeton, NJ, USA — 2High Field Magnet Laboratory (HFML-EMFL), Radboud University, Nijmegen, Netherlands — 3Department of Chemistry, Aarhus University, Aarhus, Denmark
The delocalized, hypervalent bonding in some main group element square-net materials have been linked to fascinating phenomena, including band inversions with high charge carrier mobility, and topologically nontrivial band structures. The family of rare earth tritellurides crystalize in a van der Waals structure with double tellurium square-nets, where the tellurium p orbitals form the Fermi energy crossing bands, and the partly filled 4f orbitals give rise to a rich spectrum of magnetic properties. The tellurium square-nets also undergo incommensurate charge density wave transitions affecting the band structure in ways that are yet to be fully understood. In this work, we studied the electronic structure of neodymium tritelluride through quantum oscillation and transport measurements. A remarkably high electron mobility for a magnetic van der Waals material was found, suggesting steeply dispersed bands, along with thus far unreported deviations from conventional Lifshitz-Kosevich behavior.