Local Magnetic States of the Weakly Ferromagnetic Iron-Based Superconductor Sr$_2$VFeAsO$_{3-\delta}$ Studied by X-ray Magnetic Circular Dichroism

Atsushi Fujimori; Goro Shibata; Hiromasa Namiki; Hiroshi Yamagami; Keisuke Ikeda; Masafumi Horio; Shoya Sakamoto; Takao Katagiri; Takao Sasagawa; Yosuke Nonaka

arxiv: 1808.05715 · v3 · pith:BHECOYFMnew · submitted 2018-08-17 · ❄️ cond-mat.str-el · cond-mat.supr-con

Local Magnetic States of the Weakly Ferromagnetic Iron-Based Superconductor Sr₂VFeAsO_(3-δ) Studied by X-ray Magnetic Circular Dichroism

Masafumi Horio , Yukiharu Takeda , Hiromasa Namiki , Takao Katagiri , Yuki K. Wakabayashi , Shoya Sakamoto , Yosuke Nonaka , Goro Shibata

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Keisuke Ikeda Yuji Saitoh Hiroshi Yamagami Takao Sasagawa Atsushi Fujimori

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classification ❄️ cond-mat.str-el cond-mat.supr-con

keywords magneticcirculardeltadichroismelectronsiron-basedsuperconductorvfeaso

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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 3$d$ electrons show a magnetic response similar to the other iron pnictides, signals from V 3$d$ electrons remain finite at zero magnetic field and may be responsible for the WFM.

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Local Magnetic States of the Weakly Ferromagnetic Iron-Based Superconductor Sr₂VFeAsO_(3-δ) Studied by X-ray Magnetic Circular Dichroism

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