High anisotropy in electrical and thermal conductivity through the design of aerogel-like superlattice (NaOH)0.5NbSe2
Abstract Interlayer decoupling plays an essential role in realizing unprecedented properties in atomically thin materials, but it remains relatively unexplored in the bulk. It is unclear how to realize a large crystal that behaves as its monolayer counterpart by artificial manipulation. Here, we con...
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2023-10-01
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| Series: | Nature Communications |
| Online Access: | https://doi.org/10.1038/s41467-023-42510-0 |
| _version_ | 1827709765249138688 |
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| author | Ruijin Sun Jun Deng Xiaowei Wu Munan Hao Ke Ma Yuxin Ma Changchun Zhao Dezhong Meng Xiaoyu Ji Yiyang Ding Yu Pang Xin Qian Ronggui Yang Guodong Li Zhilin Li Linjie Dai Tianping Ying Huaizhou zhao Shixuan Du Gang Li Shifeng Jin Xiaolong Chen |
| author_facet | Ruijin Sun Jun Deng Xiaowei Wu Munan Hao Ke Ma Yuxin Ma Changchun Zhao Dezhong Meng Xiaoyu Ji Yiyang Ding Yu Pang Xin Qian Ronggui Yang Guodong Li Zhilin Li Linjie Dai Tianping Ying Huaizhou zhao Shixuan Du Gang Li Shifeng Jin Xiaolong Chen |
| author_sort | Ruijin Sun |
| collection | DOAJ |
| description | Abstract Interlayer decoupling plays an essential role in realizing unprecedented properties in atomically thin materials, but it remains relatively unexplored in the bulk. It is unclear how to realize a large crystal that behaves as its monolayer counterpart by artificial manipulation. Here, we construct a superlattice consisting of alternating layers of NbSe2 and highly porous hydroxide, as a proof of principle for realizing interlayer decoupling in bulk materials. In (NaOH)0.5NbSe2, the electric decoupling is manifested by an ideal 1D insulating state along the interlayer direction. Vibration decoupling is demonstrated through the absence of interlayer models in the Raman spectrum, dominant local modes in heat capacity, low interlayer coupling energy and out-of-plane thermal conductivity (0.28 W/mK at RT) that are reduced to a few percent of NbSe2’s. Consequently, a drastic enhancement of CDW transition temperature (>110 K) and Pauling-breaking 2D superconductivity is observed, suggesting that the bulk crystal behaves similarly to an exfoliated NbSe2 monolayer. Our findings provide a route to achieve intrinsic 2D properties on a large-scale without exfoliation. |
| first_indexed | 2024-03-10T17:26:32Z |
| format | Article |
| id | doaj.art-9029056d959d4b2098b52361bafb2b19 |
| institution | Directory Open Access Journal |
| issn | 2041-1723 |
| language | English |
| last_indexed | 2024-03-10T17:26:32Z |
| publishDate | 2023-10-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Nature Communications |
| spelling | doaj.art-9029056d959d4b2098b52361bafb2b192023-11-20T10:09:23ZengNature PortfolioNature Communications2041-17232023-10-0114111010.1038/s41467-023-42510-0High anisotropy in electrical and thermal conductivity through the design of aerogel-like superlattice (NaOH)0.5NbSe2Ruijin Sun0Jun Deng1Xiaowei Wu2Munan Hao3Ke Ma4Yuxin Ma5Changchun Zhao6Dezhong Meng7Xiaoyu Ji8Yiyang Ding9Yu Pang10Xin Qian11Ronggui Yang12Guodong Li13Zhilin Li14Linjie Dai15Tianping Ying16Huaizhou zhao17Shixuan Du18Gang Li19Shifeng Jin20Xiaolong Chen21School of Science, China University of Geosciences, Beijing (CUGB)Institute of Physics, Chinese Academy of ScienceInstitute of Physics, Chinese Academy of ScienceInstitute of Physics, Chinese Academy of ScienceInstitute of Physics, Chinese Academy of ScienceInstitute of Physics, Chinese Academy of ScienceSchool of Science, China University of Geosciences, Beijing (CUGB)School of Science, China University of Geosciences, Beijing (CUGB)Institute of Physics, Chinese Academy of ScienceDepartment of Physics, Imperial College LondonSchool of Energy and Power Engineering, Huazhong University of Science and TechnologySchool of Energy and Power Engineering, Huazhong University of Science and TechnologySchool of Energy and Power Engineering, Huazhong University of Science and TechnologyInstitute of Physics, Chinese Academy of ScienceInstitute of Physics, Chinese Academy of ScienceCavendish Laboratory, 19 JJ Thomson AvenueInstitute of Physics, Chinese Academy of ScienceInstitute of Physics, Chinese Academy of ScienceInstitute of Physics, Chinese Academy of ScienceInstitute of Physics, Chinese Academy of ScienceInstitute of Physics, Chinese Academy of ScienceInstitute of Physics, Chinese Academy of ScienceAbstract Interlayer decoupling plays an essential role in realizing unprecedented properties in atomically thin materials, but it remains relatively unexplored in the bulk. It is unclear how to realize a large crystal that behaves as its monolayer counterpart by artificial manipulation. Here, we construct a superlattice consisting of alternating layers of NbSe2 and highly porous hydroxide, as a proof of principle for realizing interlayer decoupling in bulk materials. In (NaOH)0.5NbSe2, the electric decoupling is manifested by an ideal 1D insulating state along the interlayer direction. Vibration decoupling is demonstrated through the absence of interlayer models in the Raman spectrum, dominant local modes in heat capacity, low interlayer coupling energy and out-of-plane thermal conductivity (0.28 W/mK at RT) that are reduced to a few percent of NbSe2’s. Consequently, a drastic enhancement of CDW transition temperature (>110 K) and Pauling-breaking 2D superconductivity is observed, suggesting that the bulk crystal behaves similarly to an exfoliated NbSe2 monolayer. Our findings provide a route to achieve intrinsic 2D properties on a large-scale without exfoliation.https://doi.org/10.1038/s41467-023-42510-0 |
| spellingShingle | Ruijin Sun Jun Deng Xiaowei Wu Munan Hao Ke Ma Yuxin Ma Changchun Zhao Dezhong Meng Xiaoyu Ji Yiyang Ding Yu Pang Xin Qian Ronggui Yang Guodong Li Zhilin Li Linjie Dai Tianping Ying Huaizhou zhao Shixuan Du Gang Li Shifeng Jin Xiaolong Chen High anisotropy in electrical and thermal conductivity through the design of aerogel-like superlattice (NaOH)0.5NbSe2 Nature Communications |
| title | High anisotropy in electrical and thermal conductivity through the design of aerogel-like superlattice (NaOH)0.5NbSe2 |
| title_full | High anisotropy in electrical and thermal conductivity through the design of aerogel-like superlattice (NaOH)0.5NbSe2 |
| title_fullStr | High anisotropy in electrical and thermal conductivity through the design of aerogel-like superlattice (NaOH)0.5NbSe2 |
| title_full_unstemmed | High anisotropy in electrical and thermal conductivity through the design of aerogel-like superlattice (NaOH)0.5NbSe2 |
| title_short | High anisotropy in electrical and thermal conductivity through the design of aerogel-like superlattice (NaOH)0.5NbSe2 |
| title_sort | high anisotropy in electrical and thermal conductivity through the design of aerogel like superlattice naoh 0 5nbse2 |
| url | https://doi.org/10.1038/s41467-023-42510-0 |
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