Coexistence of Superconductivity and Charge Density Wave in SrPt2As2

Details Coexistence of Superconductivity and Charge Density Wave in SrPt2As2 Coexistence of Superconductivity and Charge Density Wave in SrPt2As2

2010-10-19

arxiv.org/abs/1010.3950v2

J. Phys. Soc. Jpn. 79, 123710 (2010)

Physics

Condensed Matter

Superconductivity

4 pages, 5 figures

Scientific paper

10.1143/JPSJ.79.123710

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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