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강상관계 물질 연구단
강상관계 물질 연구단
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Determination of Hund's coupling in 5d oxides using resonant inelastic x-ray scattering

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Title
Determination of Hund's coupling in 5d oxides using resonant inelastic x-ray scattering
Author(s)
Bo Yuan; J. P. Clancy; A. M. Cook; C. M. Thompson; J. Greedan; G. Cao; Byung Chul Jeon; Taewon Noh; M. H. Upton; D. Casa; T. Gog; A. Paramekanti; Young-June Kim
Publication Date
2017-06
Journal
PHYSICAL REVIEW B, v.95, no.23, pp.235114 -
Publisher
AMER PHYSICAL SOC
Abstract
We report resonant inelastic x-ray scattering (RIXS) measurements on ordered double-perovskite samples containing Re5+ and Ir5+ with 5d2 and 5d4 electronic configurations, respectively. In particular, the observed RIXS spectra of Ba2YReO6 and Sr2MIrO6 (M = Y, Gd) show sharp intra-t2g transitions, which can be quantitatively understood using a minimal atomic Hamiltonian incorporating spin-orbit coupling λ and Hund's coupling JH. Our analysis yields λ=0.38(2)eV with JH=0.26(2)eV for Re5+ and λ=0.42(2)eV with JH=0.25(4)eV for Ir5+. Our results provide sharp estimates for Hund's coupling in 5d oxides and suggest that it should be treated on equal footing with spin-orbit interaction in multiorbital 5d transition-metal compounds. © 2017 American Physical Society
URI
https://pr.ibs.re.kr/handle/8788114/3860
ISSN
2469-9950
Appears in Collections:
Center for Correlated Electron Systems(강상관계 물질 연구단) > Journal Papers (저널논문)
Files in This Item:
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