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Local magnetic states of the weakly ferromagnetic iron-based superconductor Sr$$_{2}$$VFeAsO$$_{3-delta}$$ studied by X-ray magnetic circular dichroism

Horio, Masafumi*; Takeda, Yukiharu  ; Namiki, Hiromasa*; Katagiri, Takao*; Wakabayashi, Yuki*; Sakamoto, Shoya*; Nonaka, Yosuke*; Shibata, Goro*; Ikeda, Keisuke*; Saito, Yuji ; Yamagami, Hiroshi; Sasagawa, Takao*; Fujimori, Atsushi*

We have performed X-ray magnetic circular dichroism (XMCD) measurements on the iron-based superconductor Sr$$_{2}$$VFeAsO$$_{3-delta}$$ to study the origin of weak ferromagnetism (WFM) reported for this compound. While Fe 3d electrons show a magnetic response similar to the other iron pnictides, signals from V 3d electrons remain finite at zero magnetic field and may be responsible for the WFM.



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Category:Physics, Multidisciplinary



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