Spin polarization of Ru in superconducting Ba(Fe${}_{0.795}$Ru${}_{0.205}$)${}_2$As${}_2$ studied by x-ray resonant magnetic scattering

Abstract

We have employed the x-ray resonant magnetic scattering (XRMS) technique at the Ru $L_2$ edge of the Ba(Fe${}_{1-x}$Ru${}_x$)${}_2$As${}_2$ ($x=0.205$) superconductor. We show that pronounced resonance enhancements at the Ru $L_2$ edge are observed at the wave vector which is consistent with the antiferromagnetic propagation vector of the Fe in the undoped BaFe${}_2$As${}_2$. We also demonstrate that the XRMS signals at the Ru $L_2$ edge follow the magnetic ordering of the Fe with a long correlation length, ${\xi }_{ab}>2850\pm 400$ Å. Our experimental observation shows that the Ru is spin-polarized in Ba(Fe${}_{1-x}$Ru${}_x$)${}_2$As${}_2$ compounds.

5 pages, 3 figures, minor changes in the published article

References in corpus (16)

• High-temperature superconductivity in iron-based materials
• Superconductivity at 22 K in Co-doped BaFe2As2 Crystals
• Effects of Co substitution on thermodynamic and transport properties and anisotropic $H_{c2}$ in Ba(Fe${}_{1-x}$Co${}_x$)${}_2$As${}_2$ single crystals
• Superconductivity induced by Ni doping in BaFe${}_2$As${}_2$
• Renormalized behavior and proximity to a magnetic quantum critical point in BaCo${}_2$As${}_2$
• Do Transition Metal Substitutions Dope Carriers in Iron Based Superconductors?
• Antiferromagnetic ordering in the absence of a structural distortion in Ba(Fe{1-x}Mn{x})2As2
• Competing magnetic ground states in non-superconducting Ba(Fe1-xCrx)2As2
• Enhancement of $T_c$ by disorder in underdoped iron pnictides
• Magnetic ordering and structural distortion in Ru doped BaFe2As2 single crystals studied by Neutron and X-ray diffraction
• Heat capacity study of BaFe${}_2$As${}_2$: effects of annealing
• Competition between stripe and checkerboard magnetic instabilities in Mn-doped BaFe2As2
• Effects of transition metal substitutions on the incommensurability and spin fluctuations in BaFe2As2 by elastic and inelastic neutron scattering
• Effects of Ru Substitution on Dimensionality and Electron Correlations in Ba(Fe_{1-x}Ru_x)_2As_2
• Commensurate antiferromagnetic ordering in Ba(Fe{1-x}Co{x})2As2 determined by x-ray resonant magnetic scattering at the Fe K-edge
• Magnetically polarized Ir dopant atoms in superconducting Ba(Fe${}_{1-x}$Ir${}_x$)${}_2$As${}_2$

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• Structural investigations in BaFe2-xRuxAs2 as a function of Ru and temperature
• Isotropic Quenched Disorder Triggers a Robust Nematic State in Electron-Doped Pnictides
• Magnetic polarization of Ir in underdoped, non-superconducting Eu(Fe${}_{0.94}$Ir${}_{0.06}$)${}_2$As${}_2$