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

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.

References in corpus (6)

• Superconductivity at 22 K in Co-doped BaFe2As2 Crystals
• Transition of stoichiometricSr2VO3FeAs to a superconducting state at 37.2 K
• Self doping effect and successive magnetic transitions in superconducting Sr${}_2$VFeAsO${}_3$
• Magnetic Ordering in Blocking Layer and Highly Anisotropic Electronic Structure of High-Tc Iron-based Superconductor Sr2VFeAsO3: LDA+U Studies
• Magnetism and superconductivity in Sr${}_2$VFeAsO${}_3$ revealed by ${}^{75}$As- and ${}^{51}$V-NMR under elevated pressures
• Electronic States and Possible Origin of the Orbital-Glass State in a Nearly Metallic Spinel Cobalt Vanadate: An X-ray Magnetic Circular Dichroism Study

Cited by in corpus (2)

• Superconducting transition temperatures in the electronic and magnetic phase diagrams of Sr2VFeAsO3-delta, a superconductor
• Role of Vanadium-Oxide Layer in Electronic State of Sr${}_2$VFeAsO${}_{3-\delta }$ with Oxygen Deficiency