{"title":"二维和电子掺杂增强SnSe2-Co (Cp)2有机-无机杂化超晶格的超导性","authors":"Yuliang Li, , , Yingcheng Zhao, , , Zejun Li, , , Kejun Mu, , , Chengcheng Ao, , , Tongrui Li, , , Zhanfeng Liu, , , Shengtao Cui, , , Lidong Zhang, , , Guobin Zhang, , , Yuqiao Guo, , , Zhe Sun*, , , Changzheng Wu*, , and , Yi Liu*, ","doi":"10.1021/acsmaterialslett.5c00951","DOIUrl":null,"url":null,"abstract":"<p >The tunability of transition metal dichalcogenides (TMDs) makes them ideal platforms for exploring emergent phenomena. While superconductivity has been observed in 1T-SnSe<sub>2</sub> intercalated with cobaltocene Co(Cp)<sub>2</sub>, the underlying electronic mechanisms remain unclear. Using angle-resolved photoemission spectroscopy (ARPES), we investigate the electronic structure evolution from pristine 1T-SnSe<sub>2</sub> to the SnSe<sub>2</sub>–Co(Cp)<sub>2</sub> superlattice. We observe increased two-dimensionality in the superlattice and electron doping of the SnSe<sub>2</sub> conduction band minimum. This dimensional change, combined with the higher charge carrier density, significantly increases the density of states near the Fermi level, a key factor for superconductivity. Our findings demonstrate the effectiveness of organic molecular intercalation for manipulating electronic dimensionality and inducing superconductivity in TMD-based heterostructures.</p>","PeriodicalId":19,"journal":{"name":"ACS Materials Letters","volume":"7 10","pages":"3213–3219"},"PeriodicalIF":8.7000,"publicationDate":"2025-08-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Two-Dimensionality and Electron Doping Enhance Superconductivity in a SnSe2–Co(Cp)2 Organic–Inorganic Hybrid Superlattice\",\"authors\":\"Yuliang Li, , , Yingcheng Zhao, , , Zejun Li, , , Kejun Mu, , , Chengcheng Ao, , , Tongrui Li, , , Zhanfeng Liu, , , Shengtao Cui, , , Lidong Zhang, , , Guobin Zhang, , , Yuqiao Guo, , , Zhe Sun*, , , Changzheng Wu*, , and , Yi Liu*, \",\"doi\":\"10.1021/acsmaterialslett.5c00951\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p >The tunability of transition metal dichalcogenides (TMDs) makes them ideal platforms for exploring emergent phenomena. While superconductivity has been observed in 1T-SnSe<sub>2</sub> intercalated with cobaltocene Co(Cp)<sub>2</sub>, the underlying electronic mechanisms remain unclear. Using angle-resolved photoemission spectroscopy (ARPES), we investigate the electronic structure evolution from pristine 1T-SnSe<sub>2</sub> to the SnSe<sub>2</sub>–Co(Cp)<sub>2</sub> superlattice. We observe increased two-dimensionality in the superlattice and electron doping of the SnSe<sub>2</sub> conduction band minimum. This dimensional change, combined with the higher charge carrier density, significantly increases the density of states near the Fermi level, a key factor for superconductivity. Our findings demonstrate the effectiveness of organic molecular intercalation for manipulating electronic dimensionality and inducing superconductivity in TMD-based heterostructures.</p>\",\"PeriodicalId\":19,\"journal\":{\"name\":\"ACS Materials Letters\",\"volume\":\"7 10\",\"pages\":\"3213–3219\"},\"PeriodicalIF\":8.7000,\"publicationDate\":\"2025-08-25\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"ACS Materials Letters\",\"FirstCategoryId\":\"92\",\"ListUrlMain\":\"https://pubs.acs.org/doi/10.1021/acsmaterialslett.5c00951\",\"RegionNum\":1,\"RegionCategory\":\"化学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"MATERIALS SCIENCE, MULTIDISCIPLINARY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"ACS Materials Letters","FirstCategoryId":"92","ListUrlMain":"https://pubs.acs.org/doi/10.1021/acsmaterialslett.5c00951","RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}
Two-Dimensionality and Electron Doping Enhance Superconductivity in a SnSe2–Co(Cp)2 Organic–Inorganic Hybrid Superlattice
The tunability of transition metal dichalcogenides (TMDs) makes them ideal platforms for exploring emergent phenomena. While superconductivity has been observed in 1T-SnSe2 intercalated with cobaltocene Co(Cp)2, the underlying electronic mechanisms remain unclear. Using angle-resolved photoemission spectroscopy (ARPES), we investigate the electronic structure evolution from pristine 1T-SnSe2 to the SnSe2–Co(Cp)2 superlattice. We observe increased two-dimensionality in the superlattice and electron doping of the SnSe2 conduction band minimum. This dimensional change, combined with the higher charge carrier density, significantly increases the density of states near the Fermi level, a key factor for superconductivity. Our findings demonstrate the effectiveness of organic molecular intercalation for manipulating electronic dimensionality and inducing superconductivity in TMD-based heterostructures.
期刊介绍：
ACS Materials Letters is a journal that publishes high-quality and urgent papers at the forefront of fundamental and applied research in the field of materials science. It aims to bridge the gap between materials and other disciplines such as chemistry, engineering, and biology. The journal encourages multidisciplinary and innovative research that addresses global challenges. Papers submitted to ACS Materials Letters should clearly demonstrate the need for rapid disclosure of key results. The journal is interested in various areas including the design, synthesis, characterization, and evaluation of emerging materials, understanding the relationships between structure, property, and performance, as well as developing materials for applications in energy, environment, biomedical, electronics, and catalysis. The journal has a 2-year impact factor of 11.4 and is dedicated to publishing transformative materials research with fast processing times. The editors and staff of ACS Materials Letters actively participate in major scientific conferences and engage closely with readers and authors. The journal also maintains an active presence on social media to provide authors with greater visibility.
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