Quantum transport in two-dimensional Tellurium flakes

Tellurium (Te) is a narrow bandgap, semiconducting material with a unique chiral crystal structure that remains stable under ambient conditions. The distinctive band structure of Te, predicted to host Weyl nodes near the valence band edge, opens the possibility of exploring topological phenomena in gate-defined, confined structures. In this study, we investigate low-temperature electron transport through Te flakes, employing various metals to form Ohmic contacts via work function engineering. We observe a shift in threshold voltage that correlates with the choice of metal, providing insight into contact properties. At base temperatures, conductance oscillations consistent with Fabry-Pérot interference are observed, indicating phase-coherent transport through the Te flakes. The Fabry-Pérot cavity length appears constrained by the internal defects within the Te flakes, suggesting an opportunity to further optimize material quality for future quantum device applications. Our results highlight the potential of Te for topological studies and quantum device engineering.