Metallic 1T Phase, 3d1 Electronic Configuration and Charge Density Wave Order in Molecular Beam Epitaxy Grown Monolayer Vanadium Ditelluride
Wong, PKJ; Zhang, W; Zhou, J; Bussolotti, F; Yin, X; Zhang, L; N'Diaye, AT; Morton, SA; Chen, W; Goh, J; de Jong, MP; Feng, YP; Wee, ATS
| HERO ID | 6308331 |
|---|---|
| In Press | No |
| Year | 2019 |
| Title | Metallic 1T Phase, 3d1 Electronic Configuration and Charge Density Wave Order in Molecular Beam Epitaxy Grown Monolayer Vanadium Ditelluride |
| Authors | Wong, PKJ; Zhang, W; Zhou, J; Bussolotti, F; Yin, X; Zhang, L; N'Diaye, AT; Morton, SA; Chen, W; Goh, J; de Jong, MP; Feng, YP; Wee, ATS |
| Journal | ACS Nano |
| Volume | 13 |
| Issue | 11 |
| Page Numbers | 12894-12900 |
| Abstract | 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. |
| Doi | 10.1021/acsnano.9b05349 |
| Pmid | 31693338 |
| Wosid | WOS:000500650000062 |
| Is Certified Translation | No |
| Dupe Override | No |
| Is Public | Yes |
| Language Text | English |