Coexistence of magnetism and superconductivity in the iron containing FeSr<sub>2</sub>YCu<sub>2</sub>O<sub>7.57</sub> cuprate as studied by <b>μ</b>SR
نویسندگان
چکیده
Substitution of copper by iron in the charge reservoir block YSr2Cu3O6+δ (YSCO) cuprate superconductor brings out an appealing insight on interplay between superconductivity and magnetism. In resulting FeSr2YCu2O7+δ (Fe-1212) materials, FeO1+δ layers CuO2 bi-layers are alternated along stacking direction, close analogy to RuSr2GdCu2O8 (Ru-1212) ferromagnetic superconductor. For FeSr2YCu2O7.57 compound, both BVS calculations spectroscopic data reflect a high doping level superconducting planes pCuO2 ∼ 0.30, placing this overdoped region conventional phase diagram for superconductors. Nonetheless, cations (CRB) quite oxidized, reaching formal oxidation state Fe3.6+. This highly doped is below Tc = 30 K and, from our muon spin relaxation spectroscopy (μSR) study, presence magnetic interactions has been substantiated. Most interestingly, coincidence onset with critical temperature suggests complex magnetism cuprate.
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ژورنال
عنوان ژورنال: AIP Advances
سال: 2021
ISSN: ['2158-3226']
DOI: https://doi.org/10.1063/9.0000093