Raman and fluorescence characteristics of resonant inelastic X-ray scattering from doped superconducting cuprates
Abstract
Measurements of spin excitations are essential for an understanding of spin-mediated pairing for superconductivity; and resonant inelastic X-ray scattering (RIXS) provides a considerable opportunity to probe high-energy spin excitations. However, whether RIXS correctly measures the collective spin excitations of doped superconducting cuprates remains under debate. Here we demonstrate distinct Raman- and fluorescence-like RIXS excitations of Bi1.5Pb0.6Sr1.54CaCu2O8+δ. Combining photon-energy and momentum dependent RIXS measurements with theoretical calculations using exact diagonalization provides conclusive evidence that the Raman-like RIXS excitations correspond to collective spin excitations, which are magnons in the undoped Mott insulators and evolve into paramagnons in doped superconducting compounds. In contrast, the fluorescence-like shifts are due primarily to the continuum of particle-hole excitations in the charge channel. Our results show that under the proper experimental conditions RIXS indeed can be used to probe paramagnons in doped high-Tc cuprate superconductors.
- Authors:
-
- National Synchrotron Radiation Research Center, Hsinchu (Taiwan); National Tsing Hua Univ., Hsinchu (Taiwan)
- SLAC National Accelerator Lab., Menlo Park, CA (United States)
- National Tsing Hua Univ., Hsinchu (Taiwan)
- Univ. of Warsaw (Poland)
- National Synchrotron Radiation Research Center, Hsinchu (Taiwan)
- SLAC National Accelerator Lab., Menlo Park, CA (United States); Stanford Univ., CA (United States)
- National Inst. of Advanced Industrial Science and Technology (AIST), Tsukuba (Japan)
- Publication Date:
- Research Org.:
- SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC)
- OSTI Identifier:
- 1237586
- Report Number(s):
- SLAC-PUB-16577
Journal ID: ISSN 2045-2322; srep19657
- Grant/Contract Number:
- AC02-76SF00515
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Scientific Reports
- Additional Journal Information:
- Journal Volume: 6; Journal ID: ISSN 2045-2322
- Publisher:
- Nature Publishing Group
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY
Citation Formats
Huang, H. Y., Jia, C. J., Chen, Z. Y., Wohlfeld, K., Moritz, B., Devereaux, T. P., Wu, W. B., Okamoto, J., Lee, W. S., Hashimoto, M., He, Y., Shen, Z. X., Yoshida, Y., Eisaki, H., Mou, C. Y., Chen, C. T., and Huang, D. J. Raman and fluorescence characteristics of resonant inelastic X-ray scattering from doped superconducting cuprates. United States: N. p., 2016.
Web. doi:10.1038/srep19657.
Huang, H. Y., Jia, C. J., Chen, Z. Y., Wohlfeld, K., Moritz, B., Devereaux, T. P., Wu, W. B., Okamoto, J., Lee, W. S., Hashimoto, M., He, Y., Shen, Z. X., Yoshida, Y., Eisaki, H., Mou, C. Y., Chen, C. T., & Huang, D. J. Raman and fluorescence characteristics of resonant inelastic X-ray scattering from doped superconducting cuprates. United States. https://doi.org/10.1038/srep19657
Huang, H. Y., Jia, C. J., Chen, Z. Y., Wohlfeld, K., Moritz, B., Devereaux, T. P., Wu, W. B., Okamoto, J., Lee, W. S., Hashimoto, M., He, Y., Shen, Z. X., Yoshida, Y., Eisaki, H., Mou, C. Y., Chen, C. T., and Huang, D. J. Fri .
"Raman and fluorescence characteristics of resonant inelastic X-ray scattering from doped superconducting cuprates". United States. https://doi.org/10.1038/srep19657. https://www.osti.gov/servlets/purl/1237586.
@article{osti_1237586,
title = {Raman and fluorescence characteristics of resonant inelastic X-ray scattering from doped superconducting cuprates},
author = {Huang, H. Y. and Jia, C. J. and Chen, Z. Y. and Wohlfeld, K. and Moritz, B. and Devereaux, T. P. and Wu, W. B. and Okamoto, J. and Lee, W. S. and Hashimoto, M. and He, Y. and Shen, Z. X. and Yoshida, Y. and Eisaki, H. and Mou, C. Y. and Chen, C. T. and Huang, D. J.},
abstractNote = {Measurements of spin excitations are essential for an understanding of spin-mediated pairing for superconductivity; and resonant inelastic X-ray scattering (RIXS) provides a considerable opportunity to probe high-energy spin excitations. However, whether RIXS correctly measures the collective spin excitations of doped superconducting cuprates remains under debate. Here we demonstrate distinct Raman- and fluorescence-like RIXS excitations of Bi1.5Pb0.6Sr1.54CaCu2O8+δ. Combining photon-energy and momentum dependent RIXS measurements with theoretical calculations using exact diagonalization provides conclusive evidence that the Raman-like RIXS excitations correspond to collective spin excitations, which are magnons in the undoped Mott insulators and evolve into paramagnons in doped superconducting compounds. In contrast, the fluorescence-like shifts are due primarily to the continuum of particle-hole excitations in the charge channel. Our results show that under the proper experimental conditions RIXS indeed can be used to probe paramagnons in doped high-Tc cuprate superconductors.},
doi = {10.1038/srep19657},
journal = {Scientific Reports},
number = ,
volume = 6,
place = {United States},
year = {Fri Jan 22 00:00:00 EST 2016},
month = {Fri Jan 22 00:00:00 EST 2016}
}
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