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Electronic states inLa2−xSrxCuO4+δprobed by soft-x-ray absorption
Abstract
Oxygen K-edge absorption spectra of carefully characterized ${\mathrm{La}}_{2\mathrm{\ensuremath{-}}\mathit{x}}$${\mathrm{Sr}}_{\mathit{x}}$${\mathrm{CuO}}_{4+\mathrm{\ensuremath{\delta}}}$ samples were measured using a bulk-sensitive fluoresence-yield-detection method. They reveal two distinct pre-edge peaks which evolve systematically as a function of Sr concentration. The measured spectra are quantitatively described by calculations based on the Hubbard model, including local Coulomb interactions and core-hole excitonic correlations. The absorption data are consistent with a description of electronic states based on a doped charge-transfer insulator.
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Cited by
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Tranquada, J. M. (2020) · Advances in Physics · doi:10.1080/00018732.2021.1935698 · Cited by 84
Metadata
- Authors
- Chen, C. T., Sette, F., Ma, Y., Hybertsen, M. S., Stechel, E. B., Foulkes, W. M. C., Schulter, M., Cheong, S.-W., Cooper, A. S., Rupp, L. W., Batlogg, B., Soo, Y. L., Ming, Z. H., Krol, A., & Kao, Y. H.
- Venue
- Physical Review Letters
- Publisher
- American Physical Society (APS)
- Published
- 1991-01-07
- Volume
- 66
- Issue
- 1
- Pages
- 104-107
- ISSN
- 0031-9007 (ISSN-L)
- OpenAlex
- W1552677658
- Cited by
- 502
- References
- 0
- FWCI
- 27.50
- Type
- journal article
- Language
- en
- Open access
- closed
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- The paper
- Chen, C. T., Sette, F., Ma, Y., Hybertsen, M. S., Stechel, E. B., Foulkes, W. M. C., Schulter, M., Cheong, S.-W., Cooper, A. S., Rupp, L. W., Batlogg, B., Soo, Y. L., Ming, Z. H., Krol, A., & Kao, Y. H. (1991). Electronic states inLa2−xSrxCuO4+δprobed by soft-x-ray absorption. Physical Review Letters. https://doi.org/10.1103/physrevlett.66.104
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