Correlated electrons of the flat band in charge density wave state of 4Hb-TaSexS2-x
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arXiv
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| Main Authors: | , , , , , , , , , , , , , , |
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| Format: | Preprint |
| Published: |
2024
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| _version_ | 1866911911887503360 |
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| author | Geng, Yanyan Guo, Jianfeng Meng, Fanyu Wang, Manyu Mi, Shuo Huang, Li Xu, Rui Pang, Fei Liu, Kai Wang, Shancai Gao, Hong-Jun Zhou, Weichang Ji, Wei Lei, Hechang Cheng, Zhihai |
| author_facet | Geng, Yanyan Guo, Jianfeng Meng, Fanyu Wang, Manyu Mi, Shuo Huang, Li Xu, Rui Pang, Fei Liu, Kai Wang, Shancai Gao, Hong-Jun Zhou, Weichang Ji, Wei Lei, Hechang Cheng, Zhihai |
| contents | Many intriguing quantum states of matter, such as unconventional superconductivity, magnetic phases and fractional quantum Hall physics, emergent from the spatially-correlated localized electrons in the flat band of solid materials. By using scanning tunneling microscopy and spectroscopy (STM/STS), we report the real-space investigation of correlated electrons in the flat band of superlattice 4Hb-TaSexS2-x. In contrast with the pristine 4Hb-TaS2, the selenium (Se) substitutions significantly affect the interfacial transfer of correlated electrons between the CDW states of 1T- and 1H-TaS2 layers, and contribute a real-space fractional electron-filling configurations with the distributed electron-filled and -void SoD clusters of 1T-layer. The site-specific STS spectra directly reveal their respective prominent spectra weight above EF and symmetric Mott-like spectra. In addition, the spatial distributions of these electron-filled SoDs in the 1T-layer of 4Hb-TaSe0.7S1.3 demonstrate different local short-range patterning, clearly indicating the complex neighboring interactions among the localized electrons in the flat band of 1T-layer. Our results not only provide an in-depth insight of correlated electrons in the flat CDW band, and provide a simple platform to manipulate the electron-correlation-related quantum states. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2406_06104 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Correlated electrons of the flat band in charge density wave state of 4Hb-TaSexS2-x Geng, Yanyan Guo, Jianfeng Meng, Fanyu Wang, Manyu Mi, Shuo Huang, Li Xu, Rui Pang, Fei Liu, Kai Wang, Shancai Gao, Hong-Jun Zhou, Weichang Ji, Wei Lei, Hechang Cheng, Zhihai Materials Science Many intriguing quantum states of matter, such as unconventional superconductivity, magnetic phases and fractional quantum Hall physics, emergent from the spatially-correlated localized electrons in the flat band of solid materials. By using scanning tunneling microscopy and spectroscopy (STM/STS), we report the real-space investigation of correlated electrons in the flat band of superlattice 4Hb-TaSexS2-x. In contrast with the pristine 4Hb-TaS2, the selenium (Se) substitutions significantly affect the interfacial transfer of correlated electrons between the CDW states of 1T- and 1H-TaS2 layers, and contribute a real-space fractional electron-filling configurations with the distributed electron-filled and -void SoD clusters of 1T-layer. The site-specific STS spectra directly reveal their respective prominent spectra weight above EF and symmetric Mott-like spectra. In addition, the spatial distributions of these electron-filled SoDs in the 1T-layer of 4Hb-TaSe0.7S1.3 demonstrate different local short-range patterning, clearly indicating the complex neighboring interactions among the localized electrons in the flat band of 1T-layer. Our results not only provide an in-depth insight of correlated electrons in the flat CDW band, and provide a simple platform to manipulate the electron-correlation-related quantum states. |
| title | Correlated electrons of the flat band in charge density wave state of 4Hb-TaSexS2-x |
| topic | Materials Science |
| url | https://arxiv.org/abs/2406.06104 |