- Wong, Ping Kwan Johnny;
- Zhang, Wen;
- Zhou, Jun;
- Bussolotti, Fabio;
- Yin, Xinmao;
- Zhang, Lei;
- N’Diaye, Alpha T;
- Morton, Simon A;
- Chen, Wei;
- Goh, Johnson;
- de Jong, Michel P;
- Feng, Yuan Ping;
- Wee, Andrew TS
We present a combined experimental and theoretical study of monolayer vanadium ditelluride, VTe2, grown on highly oriented pyrolytic graphite by molecular-beam epitaxy. Using various in situ microscopic and spectroscopic techniques, including scanning tunneling microscopy/spectroscopy, synchrotron X-ray and angle-resolved photoemission, and X-ray absorption, together with theoretical analysis by density functional theory calculations, we demonstrate direct evidence of the metallic 1T phase and 3d1 electronic configuration in monolayer VTe2 that also features a (4 × 4) charge density wave order at low temperatures. In contrast to previous theoretical predictions, our element-specific characterization by X-ray magnetic circular dichroism rules out a ferromagnetic order intrinsic to the monolayer. Our findings provide essential knowledge necessary for understanding this interesting yet less explored metallic monolayer in the emerging family of van der Waals magnets.