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Mg-doping enhanced superconductivity and ferromagnetism in Ti1-xMgxO films
Fan, YJ; Gan, H; Wang, D; Sun, HY; Ma, C; Huang, FQ; Zhou, J; Yin, YW; Li, XG
2020-11-01
Source PublicationACTA MATERIALIA
ISSN1359-6454
Pages66
SubtypeArticle
AbstractThe 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.
DOI10.1016/j.actamat.2020.09.001
WOS KeywordCOEXISTENCE ; TEMPERATURE ; VACANCIES ; 1ST-PRINCIPLES ; TRANSITIONS ; DEPENDENCE ; TIO2 ; SPIN
Language英语
WOS Research AreaMaterials Science ; Metallurgy & Metallurgical Engineering
PublisherPERGAMON-ELSEVIER SCIENCE LTD
Citation statistics
Document Type期刊论文
Identifierhttp://ir.sic.ac.cn/handle/331005/27647
Collection中国科学院上海硅酸盐研究所
Recommended Citation
GB/T 7714
Fan, YJ,Gan, H,Wang, D,et al. Mg-doping enhanced superconductivity and ferromagnetism in Ti1-xMgxO films[J]. ACTA MATERIALIA,2020:66.
APA Fan, YJ.,Gan, H.,Wang, D.,Sun, HY.,Ma, C.,...&Li, XG.(2020).Mg-doping enhanced superconductivity and ferromagnetism in Ti1-xMgxO films.ACTA MATERIALIA,66.
MLA Fan, YJ,et al."Mg-doping enhanced superconductivity and ferromagnetism in Ti1-xMgxO films".ACTA MATERIALIA (2020):66.
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