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arXiv · 1010.3950

Coexistence of Superconductivity and Charge Density Wave in SrPt2As2

Kazutaka Kudo·Yoshihiro Nishikubo·Minoru Nohara
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Abstract

SrPt2As2 is a novel arsenide superconductor, which crystallizes in the CaBe2Ge2-type structure as a different polymorphic form of the ThCr2Si2-type structure. SrPt2As2 exhibits a charge-density-wave (CDW) ordering at about 470 K and enters into a superconducting state at Tc = 5.2 K. The coexistence of superconductivity and CDW refers to Peierls instability with a moderately strong electron-phonon interaction. Thus SrPt2As2 can be viewed as a nonmagnetic analog of iron-based superconductors, such as doped BaFe2As2, in which superconductivity emerges in close proximity to spin-density-wave ordering.

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Kazutaka Kudo, Yoshihiro Nishikubo, Minoru Nohara. 2010-12-13. Coexistence of Superconductivity and Charge Density Wave in SrPt2As2. https://doi.org/10.1143/jpsj.79.123710

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