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MON: Monday Contributed Sessions
MON 11: Quantum Transport I
MON 11.2: Vortrag
Montag, 8. September 2025, 14:30–14:45, ZHG104
Anisotropic Electrical Transport in Quasi-1D ZrSe3-Stripes — •Davin Höllmann1, Lars Thole1, Sonja Locmelis2, and Rolf J. Haug1,3 — 1Institut für Festkörperphysik, Leibniz Universität Hannover, 30167 Hannover, Germany — 2Institut für Anorganische Chemie, Leibniz Universität Hannover, 30167 Hannover, Germany — 3Laboratorium für Nano- und Quantenengineering, Leibniz Universität Hannover, 30167 Hannover, Germany
The anisotropy in form of quasi one-dimensional (1D) chains in transition metal trichalcogenides (TMTCs), like ZrS3 and ZrSe3, makes them stand out compared to other more conventional two-dimensional (2D) materials [1]. We investigated the electrical properties of thin stripes of TMTCs, in particular ZrSe3, regarding their width and thickness. Highlighting the influence of anisotropic effective electron masses [2] in the 2D-plane. The bulk material used was fabricated by a chemical vapor transport method and then exfoliated to achieve thin stripes.
We compared narrow samples with wider samples where both have comparably similar length and thickness and found that the conductivity happens dominantly in the outer selenium atoms i.e. across the chains [3]. We confirmed this using angle dependent electrical transport measurements.
[1] J. O. Island et al., 2D Materials 4, 0220033 (2017)
[2] Y. Jin et al., Phys. Chem. Chem. Phys. 17, 18665-18669 (2015)
[3] D. Höllmann et al., ACS Appl. Electron. Mater. 7, 9, 4049-4054 (2025)
Keywords: Transition Metal Trichalcogenides; ZrSe3; Electrical Transport; Size Effect; Anisotropy