Resonant inelastic x-ray scattering study of charge excitations in superconducting and nonsuperconducting PrFeAsO₁₋y
Abstract
We report the first observation by momentum-resolved resonant inelastic x-ray scattering of charge excitations in an iron-based superconductor and its parent compound, PrFeAsO₀.₇ and PrFeAsO, respectively, with two main results. First, using calculations based on a 16-band dp model, we show that the energy of the lowest-lying excitations, identified as dd interband transitions of dominant xz,yz orbital character, exhibits a dramatic dependence on electron correlation. This enables us to estimate the Coulomb repulsion U and Hund's coupling J, and to highlight the role played by J in these peculiar orbital-dependent electron correlation effects. Second, we show that short-range antiferromagnetic correlations, which are a prerequisite to the occurrence of these excitations at the Γ point, are still present in the superconducting state.
- Authors:
- Publication Date:
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1103249
- Resource Type:
- Publisher's Accepted Manuscript
- Journal Name:
- Physical Review. B, Condensed Matter and Materials Physics
- Additional Journal Information:
- Journal Name: Physical Review. B, Condensed Matter and Materials Physics Journal Volume: 86 Journal Issue: 11; Journal ID: ISSN 1098-0121
- Publisher:
- American Physical Society
- Country of Publication:
- United States
- Language:
- English
Citation Formats
Jarrige, I., Nomura, T., Ishii, K., Gretarsson, H., Kim, Y.-J., Kim, J., Upton, M., Casa, D., Gog, T., Ishikado, M., Fukuda, T., Yoshida, M., Hill, J. P., Liu, X., Hiraoka, N., Tsuei, K. D., and Shamoto, S. Resonant inelastic x-ray scattering study of charge excitations in superconducting and nonsuperconducting PrFeAsO₁₋y. United States: N. p., 2012.
Web. doi:10.1103/PhysRevB.86.115104.
Jarrige, I., Nomura, T., Ishii, K., Gretarsson, H., Kim, Y.-J., Kim, J., Upton, M., Casa, D., Gog, T., Ishikado, M., Fukuda, T., Yoshida, M., Hill, J. P., Liu, X., Hiraoka, N., Tsuei, K. D., & Shamoto, S. Resonant inelastic x-ray scattering study of charge excitations in superconducting and nonsuperconducting PrFeAsO₁₋y. United States. https://doi.org/10.1103/PhysRevB.86.115104
Jarrige, I., Nomura, T., Ishii, K., Gretarsson, H., Kim, Y.-J., Kim, J., Upton, M., Casa, D., Gog, T., Ishikado, M., Fukuda, T., Yoshida, M., Hill, J. P., Liu, X., Hiraoka, N., Tsuei, K. D., and Shamoto, S. Wed .
"Resonant inelastic x-ray scattering study of charge excitations in superconducting and nonsuperconducting PrFeAsO₁₋y". United States. https://doi.org/10.1103/PhysRevB.86.115104.
@article{osti_1103249,
title = {Resonant inelastic x-ray scattering study of charge excitations in superconducting and nonsuperconducting PrFeAsO₁₋y},
author = {Jarrige, I. and Nomura, T. and Ishii, K. and Gretarsson, H. and Kim, Y.-J. and Kim, J. and Upton, M. and Casa, D. and Gog, T. and Ishikado, M. and Fukuda, T. and Yoshida, M. and Hill, J. P. and Liu, X. and Hiraoka, N. and Tsuei, K. D. and Shamoto, S.},
abstractNote = {We report the first observation by momentum-resolved resonant inelastic x-ray scattering of charge excitations in an iron-based superconductor and its parent compound, PrFeAsO₀.₇ and PrFeAsO, respectively, with two main results. First, using calculations based on a 16-band dp model, we show that the energy of the lowest-lying excitations, identified as dd interband transitions of dominant xz,yz orbital character, exhibits a dramatic dependence on electron correlation. This enables us to estimate the Coulomb repulsion U and Hund's coupling J, and to highlight the role played by J in these peculiar orbital-dependent electron correlation effects. Second, we show that short-range antiferromagnetic correlations, which are a prerequisite to the occurrence of these excitations at the Γ point, are still present in the superconducting state.},
doi = {10.1103/PhysRevB.86.115104},
journal = {Physical Review. B, Condensed Matter and Materials Physics},
number = 11,
volume = 86,
place = {United States},
year = {Wed Sep 05 00:00:00 EDT 2012},
month = {Wed Sep 05 00:00:00 EDT 2012}
}
https://doi.org/10.1103/PhysRevB.86.115104
Web of Science
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