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Probing electron-phonon coupling in high-Tc superconductors by site-selective isotope substitution

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Abstract:

We consider changes in the electron-phonon coupling in high-T c cuprates caused by site-selective oxygen isotope substitution. Contrary to the total substitution, the site-selective replacement influences the coupling constant for each phonon mode due to the induced changes in the phonon eigenvectors. The relative changes for some modes can be larger than 100%. The measured properties sensitive to these changes are discussed.

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Authors and Affiliations

  1. Institute for Theoretical Physics, Karl-Franzens-University-Graz, 8010 Graz, Austria, , , , , , AT

    E.Ya. Sherman & C. Ambrosch-Draxl

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  1. E.Ya. Sherman
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  2. C. Ambrosch-Draxl
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Received 9 August 2001 and Received in final form 11 January 2002

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Sherman, E., Ambrosch-Draxl, C. Probing electron-phonon coupling in high-Tc superconductors by site-selective isotope substitution. Eur. Phys. J. B 26, 323–328 (2002). https://doi.org/10.1140/epjb/e20020096

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  • DOI: https://doi.org/10.1140/epjb/e20020096

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