Coexistence of ferromagnetism, antiferromagnetism, and superconductivity in magnetically anisotropic (Eu,La)FeAs2
Abstract Materials with exceptional magnetism and superconductivity usually conceive emergent physical phenomena. Here, we investigate the physical properties of the (Eu,La)FeAs2 system with double magnetic sublattices. The parent EuFeAs2 shows anisotropy-associated magnetic behaviors, such as Eu-re...
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2021-06-01
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| Series: | npj Quantum Materials |
| Online Access: | https://doi.org/10.1038/s41535-021-00362-1 |
| _version_ | 1818460360480391168 |
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| author | Jia Yu Congcong Le Zhiwei Li Lisi Li Tong Liu Zengjia Liu Bo Zhang Bing Shen Binbin Ruan Zhi’an Ren Meng Wang |
| author_facet | Jia Yu Congcong Le Zhiwei Li Lisi Li Tong Liu Zengjia Liu Bo Zhang Bing Shen Binbin Ruan Zhi’an Ren Meng Wang |
| author_sort | Jia Yu |
| collection | DOAJ |
| description | Abstract Materials with exceptional magnetism and superconductivity usually conceive emergent physical phenomena. Here, we investigate the physical properties of the (Eu,La)FeAs2 system with double magnetic sublattices. The parent EuFeAs2 shows anisotropy-associated magnetic behaviors, such as Eu-related moment canting and exchange bias. Through La doping, the magnetic anisotropy is enhanced with ferromagnetism of Eu2+ realized in the overdoped region, and a special exchange bias of the superposed ferromagnetic/superconducting loop revealed in Eu0.8La0.2FeAs2. Meanwhile, the Fe-related antiferromagnetism shows unusual robustness against La doping. Theoretical calculation and 57Fe Mössbauer spectroscopy investigation reveal a doping-tunable dual itinerant/localized nature of the Fe-related antiferromagnetism. The coexistence of the Eu-related ferromagnetism, Fe-related robust antiferromagnetism, and superconductivity is further revealed in Eu0.8La0.2FeAs2, providing a platform for further exploration of potential applications and emergent physics. Finally, an electronic phase diagram is established for (Eu,La)FeAs2 with the whole superconducting dome adjacent to the Fe-related antiferromagnetic phase, which is of benefit for seeking underlying clues to high-temperature superconductivity. |
| first_indexed | 2024-12-14T23:29:01Z |
| format | Article |
| id | doaj.art-20ae9f4d74be45c2b1143d2f280d98f4 |
| institution | Directory Open Access Journal |
| issn | 2397-4648 |
| language | English |
| last_indexed | 2024-12-14T23:29:01Z |
| publishDate | 2021-06-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | npj Quantum Materials |
| spelling | doaj.art-20ae9f4d74be45c2b1143d2f280d98f42022-12-21T22:43:44ZengNature Portfolionpj Quantum Materials2397-46482021-06-01611810.1038/s41535-021-00362-1Coexistence of ferromagnetism, antiferromagnetism, and superconductivity in magnetically anisotropic (Eu,La)FeAs2Jia Yu0Congcong Le1Zhiwei Li2Lisi Li3Tong Liu4Zengjia Liu5Bo Zhang6Bing Shen7Binbin Ruan8Zhi’an Ren9Meng Wang10Center for Neutron Science and Technology, School of Physics, Sun Yat-Sen UniversityMax Planck Institute for Chemical Physics of SolidsKey Lab for Magnetism and Magnetic Materials of the Ministry of Education, Lanzhou UniversityCenter for Neutron Science and Technology, School of Physics, Sun Yat-Sen UniversityBeijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of SciencesCenter for Neutron Science and Technology, School of Physics, Sun Yat-Sen UniversityKey Lab for Magnetism and Magnetic Materials of the Ministry of Education, Lanzhou UniversityCenter for Neutron Science and Technology, School of Physics, Sun Yat-Sen UniversityBeijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of SciencesBeijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of SciencesCenter for Neutron Science and Technology, School of Physics, Sun Yat-Sen UniversityAbstract Materials with exceptional magnetism and superconductivity usually conceive emergent physical phenomena. Here, we investigate the physical properties of the (Eu,La)FeAs2 system with double magnetic sublattices. The parent EuFeAs2 shows anisotropy-associated magnetic behaviors, such as Eu-related moment canting and exchange bias. Through La doping, the magnetic anisotropy is enhanced with ferromagnetism of Eu2+ realized in the overdoped region, and a special exchange bias of the superposed ferromagnetic/superconducting loop revealed in Eu0.8La0.2FeAs2. Meanwhile, the Fe-related antiferromagnetism shows unusual robustness against La doping. Theoretical calculation and 57Fe Mössbauer spectroscopy investigation reveal a doping-tunable dual itinerant/localized nature of the Fe-related antiferromagnetism. The coexistence of the Eu-related ferromagnetism, Fe-related robust antiferromagnetism, and superconductivity is further revealed in Eu0.8La0.2FeAs2, providing a platform for further exploration of potential applications and emergent physics. Finally, an electronic phase diagram is established for (Eu,La)FeAs2 with the whole superconducting dome adjacent to the Fe-related antiferromagnetic phase, which is of benefit for seeking underlying clues to high-temperature superconductivity.https://doi.org/10.1038/s41535-021-00362-1 |
| spellingShingle | Jia Yu Congcong Le Zhiwei Li Lisi Li Tong Liu Zengjia Liu Bo Zhang Bing Shen Binbin Ruan Zhi’an Ren Meng Wang Coexistence of ferromagnetism, antiferromagnetism, and superconductivity in magnetically anisotropic (Eu,La)FeAs2 npj Quantum Materials |
| title | Coexistence of ferromagnetism, antiferromagnetism, and superconductivity in magnetically anisotropic (Eu,La)FeAs2 |
| title_full | Coexistence of ferromagnetism, antiferromagnetism, and superconductivity in magnetically anisotropic (Eu,La)FeAs2 |
| title_fullStr | Coexistence of ferromagnetism, antiferromagnetism, and superconductivity in magnetically anisotropic (Eu,La)FeAs2 |
| title_full_unstemmed | Coexistence of ferromagnetism, antiferromagnetism, and superconductivity in magnetically anisotropic (Eu,La)FeAs2 |
| title_short | Coexistence of ferromagnetism, antiferromagnetism, and superconductivity in magnetically anisotropic (Eu,La)FeAs2 |
| title_sort | coexistence of ferromagnetism antiferromagnetism and superconductivity in magnetically anisotropic eu la feas2 |
| url | https://doi.org/10.1038/s41535-021-00362-1 |
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