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arXiv · 1808.05715

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

Masafumi Horio·Yukiharu Takeda·Hiromasa Namiki·Takao Katagiri·Yuki K. Wakabayashi·Shoya Sakamoto·Yosuke Nonaka·Goro Shibata·Keisuke Ikeda·Yuji Saitoh·Hiroshi Yamagami·Takao Sasagawa·Atsushi Fujimori
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Abstract

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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Masafumi Horio, Yukiharu Takeda, Hiromasa Namiki, Takao Katagiri, Yuki K. Wakabayashi, Shoya Sakamoto, Yosuke Nonaka, Goro Shibata, Keisuke Ikeda, Yuji Saitoh, Hiroshi Yamagami, Takao Sasagawa, Atsushi Fujimori. 2018-08-17. Local Magnetic States of the Weakly Ferromagnetic Iron-Based Superconductor Sr$_2$VFeAsO$_{3-\delta}$ Studied by X-ray Magnetic Circular Dichroism. https://doi.org/10.7566/jpsj.87.105001

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