@article{db1dc22df9994d13988b89b9eff8824c,
title = "Temperature-dependent local structure and superconductivity of BaPd2As2 and SrPd2As2",
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.",
author = "Kensei Terashima and E. Paris and L. Simonelli and E. Salas-Colera and A. Puri and T. Wakita and Y. Yamada and S. Nakano and H. Idei and Kazutaka Kudo and Minoru Nohara and Y. Muraoka and T. Mizokawa and T. Yokoya and Saini, {N. L.}",
note = "Funding Information: We thank ESRF staff for support in the EXAFS data collection. K.T. and T.W. would like to acknowledge the hospitality at the Sapienza University of Rome. This research was partially supported by the Program for Promoting the Enhancement of Research University from Ministry of Education, Culture, Sports, Science and Technology (MEXT), Japan, the Program for Advancing Strategic International Networks to Accelerate the Circulation of Talented Researchers from the Japan Society for the Promotion of Science (JSPS) (Grant No. R2705), and JSPS KAKENHI (Grants No. 15H05886, No. 15K21732, and No.16K05451). This work is a part of the executive protocol of the general agreement for cooperation between the Sapienza University of Rome and Okayama University, Japan. Publisher Copyright: {\textcopyright} 2018 American Physical Society.",
year = "2018",
month = sep,
day = "28",
doi = "10.1103/PhysRevB.98.094525",
language = "English",
volume = "98",
journal = "Physical Review B",
issn = "2469-9950",
publisher = "American Physical Society",
number = "9",
}