Precise Tuning of Band Structures and Electron Correlations by van der Waals Stacking of One-dimensional W6Te6 Wires
| Autor: | Shuangzan Lu, Zemin Pan, Chendong Zhang, Zhenyu Zhang, Yusong Bai, Da Huo, Yanping Guo, Jinghao Deng, Ping Cui |
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| Rok vydání: | 2020 |
| Předmět: |
Coupling
Materials science Fabrication Condensed matter physics Band gap business.industry Mechanical Engineering Stacking Bioengineering General Chemistry Electron Condensed Matter Physics symbols.namesake Semiconductor symbols General Materials Science Fermi liquid theory van der Waals force business |
| Zdroj: | Nano Letters. 20:8866-8873 |
| ISSN: | 1530-6992 1530-6984 |
| Popis: | Stacking of two-dimensional (2D) van der Waals (vdW) atomic sheets has been established as a powerful approach to fabricating new materials with broad versatilities and emergent functionalities. Here we demonstrate a bottom-up approach to fabricating isolated single W6Te6 wires and their lateral assemblies, offering a unique platform for investigating the elegant role of vdW coupling in 1D systems with atomic precision. We find experimentally and theoretically a single W6Te6 wire is a 1D semiconductor with a band gap of ∼60 meV, and a semiconductor-to-metal transition takes place upon interwire vdW stacking. The metallic multiwires exhibit strong Tomonaga-Luttinger liquid characteristics with the correlation parameter g varying from g = 0.086 for biwire to g = 0.136 for six-wire assemblies, all much reduced from the Fermi liquid regime (g = 1). The present study demonstrates wire-by-wire vdW stacking is a versatile means for fabrication of 1D systems with tunable electronic properties. |
| Databáze: | OpenAIRE |
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