Pseudodoping of Metallic Two-Dimensional Materials by The Supporting Substrates
| Autor: | Tim O. Wehling, Andreas Eich, Philip Hofmann, Arlette S. Ngankeu, Marco Bianchi, Bin Shao, Alexander A. Khajetoorians, Charlotte E. Sanders |
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| Rok vydání: | 2018 |
| Předmět: |
0301 basic medicine
Materials science Science Scanning tunneling spectroscopy General Physics and Astronomy FOS: Physical sciences Context (language use) 02 engineering and technology Substrate (electronics) General Biochemistry Genetics and Molecular Biology Article Metal 03 medical and health sciences Condensed Matter::Materials Science Condensed Matter::Superconductivity Monolayer Mesoscale and Nanoscale Physics (cond-mat.mes-hall) Work function lcsh:Science Phase diagram Condensed Matter - Materials Science Multidisciplinary Condensed Matter - Mesoscale and Nanoscale Physics Scanning Probe Microscopy Doping Materials Science (cond-mat.mtrl-sci) General Chemistry 021001 nanoscience & nanotechnology 030104 developmental biology Chemical physics visual_art visual_art.visual_art_medium lcsh:Q 0210 nano-technology |
| Zdroj: | Web of Science Nature Communications, Vol 10, Iss 1, Pp 1-7 (2019) Nature Communications Nature Communications, 10, 1-7 Shao, B, Eich, A, Sanders, C, Ngankeu, A S, Bianchi, M, Hofmann, P, Khajetoorians, A A & Wehling, T O 2019, ' Pseudodoping of a metallic two-dimensional material by the supporting substrate ', Nature Communications, vol. 10, no. 1, 180 . https://doi.org/10.1038/s41467-018-08088-8 Nature Communications, 10, pp. 1-7 |
| ISSN: | 2041-1723 |
| DOI: | 10.48550/arxiv.1807.00756 |
| Popis: | Charge transfers resulting from weak bondings between two-dimensional materials and the supporting substrates are often tacitly associated with their work function differences. In this context, two-dimensional materials could be normally doped at relatively low levels. Here, we demonstrate how even weak hybridization with substrates can lead to an apparent heavy doping, using the example of monolayer 1H-TaS2 grown on Au(111). Ab-initio calculations show that sizable changes in Fermi areas can arise, while the transferred charge between substrate and two-dimensional material is much smaller than the variation of Fermi areas suggests. This mechanism, which we refer to as pseudodoping, is associated with non-linear energy-dependent shifts of electronic spectra, which our scanning tunneling spectroscopy experiments reveal for clean and defective TaS2 monolayer on Au(111). The influence of pseudodoping on the formation of many-body states in two-dimensional metallic materials is analyzed, shedding light on utilizing pseudodoping to control electronic phase diagrams. Weak hybridization of two-dimensional metallic materials with their substrates plays a crucial role in charge transfer and doping characteristics. Here, the authors report heavy doping of monolayer 1H-TaS2 synthesized on Au(111) by ab-initio calculations and STM/STS experiments. |
| Databáze: | OpenAIRE |
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