Pressure-Induced Re-Entrant Superconductivity in Transition Metal Dichalcogenide TiSe2
文献类型：期刊论文
| 作者 | Xia, Wei5,6; Wu, Jiaxuan3; Xia, Chengliang3; Li, Zhongyang4,5; Yuan, Jian5; An, Chao2; Liu, Xiangqi5; Wang, Xia5; Yu, Na5; Zou, Zhiqiang5 |
| 刊名 | SMALL
 |
| 出版日期 | 2024-07-19 |
| 关键词 | ab initio calculations high pressure re-entrant superconductivity structural transition transition metal dichalcogenide |
| ISSN号 | 1613-6810 |
| DOI | 10.1002/smll.202402749 |
| 通讯作者 | Yu, Zhenhai(yuzhh@shanghaitech.edu.cn) ; Chen, Hanghui(hanghui.chen@nyu.edu) ; Guo, Yanfeng(guoyf@shanghaitech.edu.cn) |
| 英文摘要 | Transition metal dichalcogenide TiSe2 exhibits a superconducting dome within a low pressure range of 2-4 GPa, which peaks with the maximal transition temperature T-c of approximate to 1.8 K. Here it is reported that applying high pressure induces a new superconducting state in TiSe2, which starts at approximate to 16 GPa with a substantially higher Tc that reaches 5.6 K at approximate to 21.5 GPa with no sign of decline. Combining high-throughput first-principles structure search, X-ray diffraction, and Raman spectroscopy measurements up to 30 GPa, It is found that TiSe2 undergoes a first-order structural transition from the 1T phase under ambient pressure to a new 4O phase under high pressure. Comparative ab initio calculations reveal that while the conventional phonon-mediated pairing mechanism may account for the superconductivity observed in 1T-TiSe2 under low pressure, the electron-phonon coupling of 4O-TiSe2 is too weak to induce a superconducting state whose transition temperature is as high as 5.6 K under high pressure. The new superconducting state found in pressurized TiSe2 requires further study on its underlying mechanism. |
| WOS关键词 | CRITICAL-FIELD ; TEMPERATURE ; PHASE ; ENHANCEMENT ; STATE |
| 资助项目 | National Natural Science Foundation of China[12374046] ; National Natural Science Foundation of China[920651] ; National Key R&D Program of China[2021YFE0107900] ; National Key R&D Program of China[2023YFA1406100] ; Science and Technology Commission of Shanghai Municipality[23ZR1445400] ; Shanghai Science and Technology Innovation Action Plan[21JC1402000] ; Open project from State Key Laboratory of Functional Materials for Informatics[SKL2022] ; Open project from State Key Laboratory of Surface Physics and Department of Physics, Fudan University[KF2022-13] ; Shanghai Sailing Program[23YF1426900] ; Analytical Instrumentation Center[SPST-AIC10112914] ; Double First-Class Initiative Fund of ShanghaiTech University |
| WOS研究方向 | Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:001272778400001 |
| 出版者 | WILEY-V C H VERLAG GMBH |
| 资助机构 | National Natural Science Foundation of China ; National Key R&D Program of China ; Science and Technology Commission of Shanghai Municipality ; Shanghai Science and Technology Innovation Action Plan ; Open project from State Key Laboratory of Functional Materials for Informatics ; Open project from State Key Laboratory of Surface Physics and Department of Physics, Fudan University ; Shanghai Sailing Program ; Analytical Instrumentation Center ; Double First-Class Initiative Fund of ShanghaiTech University |
| 源URL | [http://ir.hfcas.ac.cn:8080/handle/334002/137289]  |
| 专题 | 中国科学院合肥物质科学研究院 |
| 通讯作者 | Yu, Zhenhai; Chen, Hanghui; Guo, Yanfeng |
| 作者单位 | 1.NYU, Dept Phys, New York, NY 10012 USA 2.Anhui Univ, Inst Phys Sci & Informat Technol, Informat Mat & Intelligent Sensing Lab Anhui Prov, Hefei 230601, Peoples R China 3.NYU Shanghai, NYU ECNU Inst Phys, Shanghai 200122, Peoples R China 4.Ctr High Pressure Sci & Technol Adv Res, Shanghai 201203, Peoples R China 5.ShanghaiTech Univ, Sch Phys Sci & Technol, Shanghai 201210, Peoples R China 6.ShanghaiTech Univ, ShanghaiTech Lab Topol Phys, Shanghai 201210, Peoples R China 7.Chinese Acad Sci, Shanghai Adv Res Inst, Shanghai Synchrotron Radiat Facil, Shanghai 201204, Peoples R China 8.Chinese Acad Sci, High Magnet Field Lab, Anhui Prov Key Lab Condensed Matter Phys Extreme C, Hefei 230031, Peoples R China |
| 推荐引用方式 GB/T 7714 | Xia, Wei,Wu, Jiaxuan,Xia, Chengliang,et al. Pressure-Induced Re-Entrant Superconductivity in Transition Metal Dichalcogenide TiSe2[J]. SMALL,2024. |
| APA | Xia, Wei.,Wu, Jiaxuan.,Xia, Chengliang.,Li, Zhongyang.,Yuan, Jian.,...&Guo, Yanfeng.(2024).Pressure-Induced Re-Entrant Superconductivity in Transition Metal Dichalcogenide TiSe2.SMALL. |
| MLA | Xia, Wei,et al."Pressure-Induced Re-Entrant Superconductivity in Transition Metal Dichalcogenide TiSe2".SMALL (2024). |
入库方式： OAI收割
来源：合肥物质科学研究院
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