Spin polarization of Ru in superconducting Ba(Fe 0.795 Ru 0.205 ) 2 As 2 studied by x-ray resonant magnetic scattering

Kim, M. G.; Soh, J.; Lang, J.; Dean, M. P.  M.; Thaler, A.; Bud'ko, S. L.; Canfield, P. C.; Bourret-Courchesne, E.; Kreyssig, A.; Goldman, A. I.; Birgeneau, R. J.

doi:10.1103/PhysRevB.88.014424

Spin polarization of Ru in superconducting Ba(Fe $_{0.795}$ Ru $_{0.205}$ ) $_{2}$ As $_{2}$ studied by x-ray resonant magnetic scattering

Journal Article · Mon Jul 01 04:00:00 EDT 2013 · Physical Review. B, Condensed Matter and Materials Physics

DOI:https://doi.org/10.1103/PhysRevB.88.014424· OSTI ID:1385472

Kim, M. G.; Soh, J.; Lang, J.; Dean, M. P. M.; Thaler, A.; Bud'ko, S. L.; Canfield, P. C.; Bourret-Courchesne, E.; Kreyssig, A.; Goldman, A. I.; Birgeneau, R. J.

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, ξ a b > 2850 ± 400 Å. Our experimental observation shows that the Ru is spin polarized in Ba(Fe 1 - x Ru x ) 2 As 2 compounds.

Research Organization:: Energy Frontier Research Centers (EFRC) (United States). Center for Emergent Superconductivity (CES)

Sponsoring Organization:: USDOE SC Office of Basic Energy Sciences (SC-22)

DOE Contract Number:: AC02-98CH10886

OSTI ID:: 1385472

Journal Information:: Physical Review. B, Condensed Matter and Materials Physics, Journal Name: Physical Review. B, Condensed Matter and Materials Physics Journal Issue: 1 Vol. 88; ISSN 1098-0121; ISSN PRBMDO

Publisher:: American Physical Society (APS)

Country of Publication:: United States

Language:: English

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Spin polarization of Ru in superconducting Ba(Fe $_{0.795}$ Ru $_{0.205}$ ) $_{2}$ As $_{2}$ studied by x-ray resonant magnetic scattering