Mg-doping enhanced superconductivity and ferromagnetism in Ti1-xMgxO films
文献类型：期刊论文
| 作者 | Fan, Y. J.3,4; Gan, H.3,4; Wang, D.2; Sun, H. Y.3,4; Ma, C.3,4; Huang, F. Q.2; Zhou, J.3,4; Yin, Y. W.3,4; Li, X. G.1,3,4,5 |
| 刊名 | ACTA MATERIALIA
 |
| 出版日期 | 2020-11-01 |
| 卷号 | 200 |
| ISSN号 | 1359-6454 |
| 关键词 | Ti1-xMgxO films Doping Disorder Superconductivity Ferromagnetism First-principles calculations |
| DOI | 10.1016/j.actamat.2020.09.001 |
| 通讯作者 | Yin, Y. W.(yyw@ustc.edu.cn) ; Li, X. G.(lizg@ustc.edu.cn) |
| 英文摘要 | The structure, electrical transport, and magnetic properties have been systematically studied in superconducting Ti1-xMgxO (x = 0, 0.003, 0.02, 0.08, and 0.27) films. It is found that, both the zero resistance and onset superconducting transition temperatures of Ti1-xMgxO first increase with increasing the Mg content from x = 0 to x = 0.02, and then decrease with the further increase of x. More interestingly, the Mg-doping simultaneously introduces a ferromagnetic order into this superconducting system, and the ferromagnetism gradually increases with increasing Mg content. According to the first-principles calculations, the non-monotonous Mg doping-dependent superconductivity, carrier density, and disorder strength may be explained as that the Mg atoms first fill the Ti vacancy sites and then substitute the Ti atoms. The calculations also reveal that the ferromagnetism is highly related to the spin polarization of 3d states of Ti atoms surrounding Mg atoms. The discovery of enhanced superconductivity with co-existing ferromagnetism in Ti1-xMgxO films provides an excellent platform to investigate the interaction between superconductivity and ferromagnetism. (C) 2020 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved. |
| WOS关键词 | COEXISTENCE ; TEMPERATURE ; VACANCIES ; 1ST-PRINCIPLES ; TRANSITIONS ; DEPENDENCE ; TIO2 ; SPIN |
| 资助项目 | National Natural Science Foundation of China[51790491] ; National Natural Science Foundation of China[21521001] ; National Natural Science Foundation of China[51972296] ; National Key Research and Development Program of China[201GYFA0300103] ; National Key Research and Development Program of China[2019YFA0307900] |
| WOS研究方向 | Materials Science ; Metallurgy & Metallurgical Engineering |
| 语种 | 英语 |
| 出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
| WOS记录号 | WOS:000580631600007 |
| 资助机构 | National Natural Science Foundation of China ; National Key Research and Development Program of China |
| 源URL | [http://ir.hfcas.ac.cn:8080/handle/334002/105311]  |
| 专题 | 中国科学院合肥物质科学研究院 |
| 通讯作者 | Yin, Y. W.; Li, X. G. |
| 作者单位 | 1.Collaborat Innovat Ctr Adv Microstruct, Nanjing 210093, Peoples R China 2.Chinese Acad Sci, Shanghai Inst Ceram, State Key Lab High Performance Ceram & Superfine, Shanghai 200050, Peoples R China 3.Univ Sci & Technol China, CAS Key Lab Strongly Coupled Quantum Matter Phys, Hefei 230026, Peoples R China 4.Univ Sci & Technol China, Hefei Natl Lab Phys Sci Microscale, Dept Phys, Hefei 230026, Peoples R China 5.Inst Solid State Phys, Key Lab Mat Phys, Hefei 230026, Peoples R China |
| 推荐引用方式 GB/T 7714 | Fan, Y. J.,Gan, H.,Wang, D.,et al. Mg-doping enhanced superconductivity and ferromagnetism in Ti1-xMgxO films[J]. ACTA MATERIALIA,2020,200. |
| APA | Fan, Y. J..,Gan, H..,Wang, D..,Sun, H. Y..,Ma, C..,...&Li, X. G..(2020).Mg-doping enhanced superconductivity and ferromagnetism in Ti1-xMgxO films.ACTA MATERIALIA,200. |
| MLA | Fan, Y. J.,et al."Mg-doping enhanced superconductivity and ferromagnetism in Ti1-xMgxO films".ACTA MATERIALIA 200(2020). |
入库方式： OAI收割
来源：合肥物质科学研究院
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