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Title: Determination of Hund's coupling in 5 d oxides using resonant inelastic x-ray scattering

Abstract

We report resonant inelastic x-ray scattering (RIXS) measurements on ordered double-perovskite samples containing Re5+ and Ir5+ with 5d(2) and 5d(4) electronic configurations, respectively. In particular, the observedRIXS spectra of Ba2YReO6 and Sr2MIrO6 (M = Y, Gd) show sharp intra-t(2g) transitions, which can be quantitatively understood using a minimal "atomic" Hamiltonian incorporating spin-orbit coupling. and Hund's coupling J(H). Our analysis yields lambda = 0.38(2) eV with J(H) = 0.26(2) eV for Re5+ and lambda = 0.42(2) eV with J(H) = 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.

Authors:
; ; ; ; ; ; ; ; ; ; ; ;
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
Institute for Basic Science; Natural Sciences and Engineering Research Council of Canada (NSERC); National Science Foundation (NSF); USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
OSTI Identifier:
1376704
DOE Contract Number:  
AC02-06CH11357
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review B; Journal Volume: 95; Journal Issue: 23
Country of Publication:
United States
Language:
English

Citation Formats

Yuan, Bo, Clancy, J. P., Cook, A. M., Thompson, C. M., Greedan, J., Cao, G., Jeon, B. C., Noh, T. W., Upton, M. H., Casa, D., Gog, T., Paramekanti, A., and Kim, Young-June. Determination of Hund's coupling in 5d oxides using resonant inelastic x-ray scattering. United States: N. p., 2017. Web. doi:10.1103/PhysRevB.95.235114.
Yuan, Bo, Clancy, J. P., Cook, A. M., Thompson, C. M., Greedan, J., Cao, G., Jeon, B. C., Noh, T. W., Upton, M. H., Casa, D., Gog, T., Paramekanti, A., & Kim, Young-June. Determination of Hund's coupling in 5d oxides using resonant inelastic x-ray scattering. United States. doi:10.1103/PhysRevB.95.235114.
Yuan, Bo, Clancy, J. P., Cook, A. M., Thompson, C. M., Greedan, J., Cao, G., Jeon, B. C., Noh, T. W., Upton, M. H., Casa, D., Gog, T., Paramekanti, A., and Kim, Young-June. Thu . "Determination of Hund's coupling in 5d oxides using resonant inelastic x-ray scattering". United States. doi:10.1103/PhysRevB.95.235114.
@article{osti_1376704,
title = {Determination of Hund's coupling in 5d oxides using resonant inelastic x-ray scattering},
author = {Yuan, Bo and Clancy, J. P. and Cook, A. M. and Thompson, C. M. and Greedan, J. and Cao, G. and Jeon, B. C. and Noh, T. W. and Upton, M. H. and Casa, D. and Gog, T. and Paramekanti, A. and Kim, Young-June},
abstractNote = {We report resonant inelastic x-ray scattering (RIXS) measurements on ordered double-perovskite samples containing Re5+ and Ir5+ with 5d(2) and 5d(4) electronic configurations, respectively. In particular, the observedRIXS spectra of Ba2YReO6 and Sr2MIrO6 (M = Y, Gd) show sharp intra-t(2g) transitions, which can be quantitatively understood using a minimal "atomic" Hamiltonian incorporating spin-orbit coupling. and Hund's coupling J(H). Our analysis yields lambda = 0.38(2) eV with J(H) = 0.26(2) eV for Re5+ and lambda = 0.42(2) eV with J(H) = 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.},
doi = {10.1103/PhysRevB.95.235114},
journal = {Physical Review B},
number = 23,
volume = 95,
place = {United States},
year = {Thu Jun 01 00:00:00 EDT 2017},
month = {Thu Jun 01 00:00:00 EDT 2017}
}