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  • Analysis by X-ray photoelectron spectroscopy of LnBa2Cu3O7-x: The significance of fine structure in the O 1s and Ba 3d envelopes

    Author(s)
    HEALY, PC
    MYHRA, S
    RIVIERE, JC
    STEWART, AM
    THOMPSON, JG
    Griffith University Author(s)
    Myhra, Sverre
    Healy, Peter C.
    Year published
    1988
    Metadata
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    Abstract
    Observations by X-ray photoelectron spectroscopy on LnBa2Cu3O7-x (Ln = Y and Ho) show that there are no significant surface electronic differences as a result of substitution of Y by Ho. The O 1s and Ba 3d envelopes exhibit fine structure which appears to be related to significant electronic and structural properties of the 1-2-3 compounds. Namely, the low-binding-energy component of the O 1s envelope is due to Ba-o bonding as well as being specific to the electronic linkage of the Cu layers in the orthorhombic structure. The anomalous low-binding-energy contribution to the Ba 3d envelope suggests that Ba may play an important ...
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    Observations by X-ray photoelectron spectroscopy on LnBa2Cu3O7-x (Ln = Y and Ho) show that there are no significant surface electronic differences as a result of substitution of Y by Ho. The O 1s and Ba 3d envelopes exhibit fine structure which appears to be related to significant electronic and structural properties of the 1-2-3 compounds. Namely, the low-binding-energy component of the O 1s envelope is due to Ba-o bonding as well as being specific to the electronic linkage of the Cu layers in the orthorhombic structure. The anomalous low-binding-energy contribution to the Ba 3d envelope suggests that Ba may play an important electronic role as well as a structural role. There is further evidence that Sr and Ca play similar roles in the related Bi-Sr-Ca-Cu-O high-Tc compounds.
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    Journal Title
    Philisophical Magazine Letters
    Volume
    58
    Issue
    3
    Publisher URI
    http://www.tandf.co.uk/journals/titles/09500839.asp
    DOI
    https://doi.org/10.1080/09500838808214746
    Copyright Statement
    © 1988 Taylor & Francis. Please refer to the journal's website for access to the definitive, published version or contact the author.
    Subject
    Condensed matter physics
    Materials engineering
    Mechanical engineering
    Publication URI
    http://hdl.handle.net/10072/25003
    Collection
    • Journal articles

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