Coexistence of ferromagnetism, antiferromagnetism, and superconductivity in magnetically anisotropic (Eu,La)FeAs2
نویسندگان
چکیده
Abstract Materials with exceptional magnetism and superconductivity usually conceive emergent physical phenomena. Here, we investigate the properties of (Eu,La)FeAs 2 system double magnetic sublattices. The parent EuFeAs shows anisotropy-associated behaviors, such as Eu-related moment canting exchange bias. Through La doping, anisotropy is enhanced ferromagnetism Eu 2+ realized in overdoped region, a special bias superposed ferromagnetic/superconducting loop revealed 0.8 0.2 FeAs . Meanwhile, Fe-related antiferromagnetism unusual robustness against doping. Theoretical calculation 57 Fe Mössbauer spectroscopy investigation reveal doping-tunable dual itinerant/localized nature antiferromagnetism. coexistence ferromagnetism, robust antiferromagnetism, further , providing platform for exploration potential applications physics. Finally, an electronic phase diagram established whole superconducting dome adjacent to antiferromagnetic phase, which benefit seeking underlying clues high-temperature superconductivity.
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ژورنال
عنوان ژورنال: npj quantum materials
سال: 2021
ISSN: ['2397-4648']
DOI: https://doi.org/10.1038/s41535-021-00362-1