Direct observation of a structural-fluctuation enhancement in a superconducting state of Tl2Ba2Ca2Cu3O10 by electron diffraction

Yasumasa Koyama, S. I. Nakamura, Y. Inoue, T. Ohno

    Research output: Contribution to journalArticle

    14 Citations (Scopus)

    Abstract

    Features of temperature-dependent diffuse scattering showing a structural fluctuation in Tl2Ba2Ca2Cu3O10 have been investigated in detail in a temperature range between about 20 K and room temperature by means of electron diffraction. As the temperature is lowered, the intensity of diffuse scattering increases remarkably below about 130 K, which is taken to be the onset temperature of superconductivity. Because the scattering is obviously due to a structural fluctuation, Tl2Ba2Ca2Cu3O10 is understood to exhibit an enhancement of the fluctuation in a superconducting state. In addition, a careful analysis of the features in the scattering suggests that a dynamic displacement of an apical O atom in the CuO5 pyramid along the c axis is responsible for the structural fluctuation in the superconducting state.

    Original languageEnglish
    Pages (from-to)5757-5759
    Number of pages3
    JournalPhysical Review B
    Volume46
    Issue number9
    DOIs
    Publication statusPublished - 1992

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    Electron diffraction
    electron diffraction
    augmentation
    Scattering
    scattering
    Temperature
    temperature
    Superconductivity
    pyramids
    superconductivity
    Atoms
    room temperature
    atoms

    ASJC Scopus subject areas

    • Condensed Matter Physics

    Cite this

    Direct observation of a structural-fluctuation enhancement in a superconducting state of Tl2Ba2Ca2Cu3O10 by electron diffraction. / Koyama, Yasumasa; Nakamura, S. I.; Inoue, Y.; Ohno, T.

    In: Physical Review B, Vol. 46, No. 9, 1992, p. 5757-5759.

    Research output: Contribution to journalArticle

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    abstract = "Features of temperature-dependent diffuse scattering showing a structural fluctuation in Tl2Ba2Ca2Cu3O10 have been investigated in detail in a temperature range between about 20 K and room temperature by means of electron diffraction. As the temperature is lowered, the intensity of diffuse scattering increases remarkably below about 130 K, which is taken to be the onset temperature of superconductivity. Because the scattering is obviously due to a structural fluctuation, Tl2Ba2Ca2Cu3O10 is understood to exhibit an enhancement of the fluctuation in a superconducting state. In addition, a careful analysis of the features in the scattering suggests that a dynamic displacement of an apical O atom in the CuO5 pyramid along the c axis is responsible for the structural fluctuation in the superconducting state.",
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    AU - Ohno, T.

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