Study of Vanadium-Doped WTe2

The introduction of magnetic order into topological materials has the potential to unlock novel quantum phenomena, such as the quantum anomalous Hall effect (QAHE) [1] and nonreciprocal magnetoelectric effects [2]. In two-dimensional topological insulators (2DTIs), topological protection guarantees the existence of helical edge states where spin and momentum are tightly coupled. This spin-momentum locking leads to the quantum spin Hall effect, characterized by fully spin-polarized edge currents [3]. By integrating magnetic materials with 2DTIs, we aim to explore new routes to achieving magnetoelectric coupling [4]. In this study, we investigate the effects of doping WTe2, a well-known 2DTI candidate, with vanadium ions to induce magnetic ordering. Vanadium, a magnetic dopant, offers the potential to tune the magnetic and electronic properties of WTe2, thereby creating a platform for studying the interplay between magnetism and topological edge states. We focus on the synthesis techniques, structural characterization, and magnetic properties of vanadium-doped WTe2. Our findings suggest that introducing magnetic dopants can pave the way for the realization of magnetically tunable topological devices, with potential applications in quantum computing and spintronics.
Acknowledgement: We acknowledge the support of Bulgarian Science Fund under the project FNI KP-06-H 58/12 and the European Union's Horizon 2020 FET-PROACTIVE project TOCHA under Grant No. 824140. V. M. and N.M. acknowledge the financial support by the European Regional Development Fund within the Operational Programme“Science and Education for Smart Growth 2014−2020” under the Project CoE ‘National Center of Mechatronics and Clean Technologies’ BG05M2OP001-1.001-0008-C01.
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