外延 1T-TaS2 螺旋中的可调谐电子相关性

IF 27.4 1区材料科学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Advanced Materials Pub Date : 2024-12-17 DOI:10.1002/adma.202413926

Chung-Jen Chen, Chun-An Chen, Yu-Hsiang Cheng, Chia-Tzu Chung, Yu-Ting Lin, Yi-Cheng Chiang, Ting-Kuo Lee, Yi-Hsien Lee

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摘要

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Tunable Electron Correlation in Epitaxial 1T-TaS2 Spirals

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Tunable Electron Correlation in Epitaxial 1T-TaS2 Spirals

Tantalum disulfide (1T-TaS₂), being a Mott insulator with strong electron correlation, is highlighted for diverse collective quantum states in the 2D lattice, including charge density wave (CDW), spin liquid, and unconventional superconductivity. The Mott physics embedded in the 2D triangular CDW lattice has raised debates on stacking-dependent properties because interlayer interactions are sensitive to van der Waals (vdW) spacing. However, control of interlayer distance remains a challenge. Here, spiral lattices in the epitaxial TaS₂ spirals are studied to probe collective properties with tunable interlayer interactions. A scalable synthesis of epitaxial TaS₂ spirals is presented. A more than 50%-increased interlayer spacing enables prototype decoupled monolayers for enhanced electronic correlation exhibiting Mott physics at room-temperature and a simplified system to explore collective properties in vdW materials.

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来源期刊

Advanced Materials 工程技术-材料科学：综合

CiteScore

43.00

自引率

4.10%

发文量

2182

审稿时长

2 months

期刊介绍： Advanced Materials, one of the world's most prestigious journals and the foundation of the Advanced portfolio, is the home of choice for best-in-class materials science for more than 30 years. Following this fast-growing and interdisciplinary field, we are considering and publishing the most important discoveries on any and all materials from materials scientists, chemists, physicists, engineers as well as health and life scientists and bringing you the latest results and trends in modern materials-related research every week.