Temperature-dependent local structure and superconductivity of BaPd2As2 and SrPd2As2

K. Terashima, E. Paris, L. Simonelli, E. Salas-Colera, A. Puri, T. Wakita, Y. Yamada, S. Nakano, H. Idei, K. Kudo, M. Nohara, Y. Muraoka, Takashi Mizokawa, T. Yokoya, N. L. Saini

    Research output: Contribution to journalArticle

    Abstract

    The local structures of 122-type paradium arsenides, namely BaPd2As2 and SrPd2As2, are examined by As K-edge extended x-ray absorption fine structure measurements to find a possible correlation between the variation of their superconducting transition temperature and the local structure. The local atomic distances are found to be consistent with average distances measured by diffraction techniques. The temperature dependence of mean square relative displacements reveal that, while BaPd2As2 is characterized by a local As-Pd soft mode, albeit with larger atomic disorder, SrPd2As2 shows anomalous As-Pd correlations with a kink at ∼160 K due to hardening by raising temperature. We have discussed implications of these results and possible mechanisms of differing superconducting transition temperature in relation with the structural instability.

    Original languageEnglish
    Article number094525
    JournalPhysical Review B
    Volume98
    Issue number9
    DOIs
    Publication statusPublished - 2018 Sep 28

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    Superconductivity
    Superconducting transition temperature
    superconductivity
    transition temperature
    arsenides
    x ray absorption
    hardening
    Hardening
    Diffraction
    fine structure
    disorders
    X rays
    Temperature
    temperature dependence
    temperature
    diffraction

    ASJC Scopus subject areas

    • Electronic, Optical and Magnetic Materials
    • Condensed Matter Physics

    Cite this

    Terashima, K., Paris, E., Simonelli, L., Salas-Colera, E., Puri, A., Wakita, T., ... Saini, N. L. (2018). Temperature-dependent local structure and superconductivity of BaPd2As2 and SrPd2As2. Physical Review B, 98(9), [094525]. https://doi.org/10.1103/PhysRevB.98.094525

    Temperature-dependent local structure and superconductivity of BaPd2As2 and SrPd2As2. / Terashima, K.; Paris, E.; Simonelli, L.; Salas-Colera, E.; Puri, A.; Wakita, T.; Yamada, Y.; Nakano, S.; Idei, H.; Kudo, K.; Nohara, M.; Muraoka, Y.; Mizokawa, Takashi; Yokoya, T.; Saini, N. L.

    In: Physical Review B, Vol. 98, No. 9, 094525, 28.09.2018.

    Research output: Contribution to journalArticle

    Terashima, K, Paris, E, Simonelli, L, Salas-Colera, E, Puri, A, Wakita, T, Yamada, Y, Nakano, S, Idei, H, Kudo, K, Nohara, M, Muraoka, Y, Mizokawa, T, Yokoya, T & Saini, NL 2018, 'Temperature-dependent local structure and superconductivity of BaPd2As2 and SrPd2As2', Physical Review B, vol. 98, no. 9, 094525. https://doi.org/10.1103/PhysRevB.98.094525
    Terashima K, Paris E, Simonelli L, Salas-Colera E, Puri A, Wakita T et al. Temperature-dependent local structure and superconductivity of BaPd2As2 and SrPd2As2. Physical Review B. 2018 Sep 28;98(9). 094525. https://doi.org/10.1103/PhysRevB.98.094525
    Terashima, K. ; Paris, E. ; Simonelli, L. ; Salas-Colera, E. ; Puri, A. ; Wakita, T. ; Yamada, Y. ; Nakano, S. ; Idei, H. ; Kudo, K. ; Nohara, M. ; Muraoka, Y. ; Mizokawa, Takashi ; Yokoya, T. ; Saini, N. L. / Temperature-dependent local structure and superconductivity of BaPd2As2 and SrPd2As2. In: Physical Review B. 2018 ; Vol. 98, No. 9.
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    AU - Terashima, K.

    AU - Paris, E.

    AU - Simonelli, L.

    AU - Salas-Colera, E.

    AU - Puri, A.

    AU - Wakita, T.

    AU - Yamada, Y.

    AU - Nakano, S.

    AU - Idei, H.

    AU - Kudo, K.

    AU - Nohara, M.

    AU - Muraoka, Y.

    AU - Mizokawa, Takashi

    AU - Yokoya, T.

    AU - Saini, N. L.

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