Role of the local structure in superconductivity of Lao0.5F0.5BiS2-xSex system

E. Paris, Y. Mizuguchi, M. Y. Hacisalihoglu, T. Hiroi, B. Joseph, G. Aquilanti, O. Miura, Takashi Mizokawa, N. L. Saini

    Research output: Contribution to journalArticle

    9 Citations (Scopus)

    Abstract

    We have studied the local structure of LaO0.5F0.5BiS2-xSex by Bi L1-edge extended x-ray absorption fine structure (EXAFS). We find a significant effect of Se substitution on the local atomic correlations with a gradual elongation of average in-plane Bi-S bondlength. The associated mean square relative displacement, measuring average local distortions in the BiS2 plane, hardly shows any change for small Se substitution, but decreases significantly for . The Se substitution appears to suppress the local distortions within the BiS2 plane that may optimize in-plane orbital hybridization and hence the superconductivity. The results suggest that the local structure of the BiS2-layer is one of the key ingredients to control the physical properties of the BiS2-based dichalcogenides.

    Original languageEnglish
    Article number145603
    JournalJournal of Physics Condensed Matter
    Volume29
    Issue number14
    DOIs
    Publication statusPublished - 2017 Mar 6

    Fingerprint

    Superconductivity
    Substitution reactions
    superconductivity
    substitutes
    x ray absorption
    ingredients
    elongation
    Elongation
    Physical properties
    physical properties
    fine structure
    X rays
    orbitals

    Keywords

    • BiS-based superconductors
    • effect of substitution
    • local structure and disorder

    ASJC Scopus subject areas

    • Materials Science(all)
    • Condensed Matter Physics

    Cite this

    Paris, E., Mizuguchi, Y., Hacisalihoglu, M. Y., Hiroi, T., Joseph, B., Aquilanti, G., ... Saini, N. L. (2017). Role of the local structure in superconductivity of Lao0.5F0.5BiS2-xSex system. Journal of Physics Condensed Matter, 29(14), [145603]. https://doi.org/10.1088/1361-648X/aa5e97

    Role of the local structure in superconductivity of Lao0.5F0.5BiS2-xSex system. / Paris, E.; Mizuguchi, Y.; Hacisalihoglu, M. Y.; Hiroi, T.; Joseph, B.; Aquilanti, G.; Miura, O.; Mizokawa, Takashi; Saini, N. L.

    In: Journal of Physics Condensed Matter, Vol. 29, No. 14, 145603, 06.03.2017.

    Research output: Contribution to journalArticle

    Paris, E, Mizuguchi, Y, Hacisalihoglu, MY, Hiroi, T, Joseph, B, Aquilanti, G, Miura, O, Mizokawa, T & Saini, NL 2017, 'Role of the local structure in superconductivity of Lao0.5F0.5BiS2-xSex system', Journal of Physics Condensed Matter, vol. 29, no. 14, 145603. https://doi.org/10.1088/1361-648X/aa5e97
    Paris E, Mizuguchi Y, Hacisalihoglu MY, Hiroi T, Joseph B, Aquilanti G et al. Role of the local structure in superconductivity of Lao0.5F0.5BiS2-xSex system. Journal of Physics Condensed Matter. 2017 Mar 6;29(14). 145603. https://doi.org/10.1088/1361-648X/aa5e97
    Paris, E. ; Mizuguchi, Y. ; Hacisalihoglu, M. Y. ; Hiroi, T. ; Joseph, B. ; Aquilanti, G. ; Miura, O. ; Mizokawa, Takashi ; Saini, N. L. / Role of the local structure in superconductivity of Lao0.5F0.5BiS2-xSex system. In: Journal of Physics Condensed Matter. 2017 ; Vol. 29, No. 14.
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