The New Superconductor tP-SrPd2Bi2: Structural Polymorphism and Superconductivity in Intermetallics

Weiwei Xie; Elizabeth M. Seibel; Robert J. Cava

The New Superconductor tP-SrPd2Bi2: Structural Polymorphism and Superconductivity in Intermetallics

Superconductivity 2016-02-04 v1 Materials Science

Authors: Weiwei Xie , Elizabeth M. Seibel , Robert J. Cava

Abstract

We consider a system where structural polymorphism suggests the possible existence of superconductivity through the implied structural instability. SrPd2Bi2 has two poly-morphs which can be controlled by the synthesis temperature: a tetragonal form (CaBe2Ge2-type) and a monoclinic form (BaAu2Sb2-type). Though the crystallographic difference between the two forms may at first seem trivial, we show that tetragonal SrPd2Bi2 is superconducting at 2.0 K whereas monoclinic SrPd2Bi2 is not. We rationalize this finding and place it in context with other 1-2-2 phases

Keywords

superconductivity single crystal superconductivity mgb2 superconductivity

Cite

@article{arxiv.1602.01364,
  title  = {The New Superconductor tP-SrPd2Bi2: Structural Polymorphism and Superconductivity in Intermetallics},
  author = {Weiwei Xie and Elizabeth M. Seibel and Robert J. Cava},
  journal= {arXiv preprint arXiv:1602.01364},
  year   = {2016}
}

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