Coexistence of superconductivity and charge density wave in SrPt 2As2

Kazutaka Kudo; Yoshihiro Nishikubo; Minoru Nohara

doi:10.1143/JPSJ.79.123710

Coexistence of superconductivity and charge density wave in SrPt ₂As₂

Kazutaka Kudo, Yoshihiro Nishikubo, Minoru Nohara

Research Institute for Interdisciplinary Science

Research output: Contribution to journal › Article

73 Citations (Scopus)

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 470K and enters into a superconducting state at T_c = 5:2K. The coexistence of superconductivity and CDW refers to Peierls instability with a moderately strong electron-phonon interaction. Thus SrPt₂As ₂ 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.

Original language	English
Article number	123710
Journal	journal of the physical society of japan
Volume	79
Issue number	12
DOIs	https://doi.org/10.1143/JPSJ.79.123710
Publication status	Published - Dec 1 2010

Keywords

Charge-density wave
Non-iron-based pnictide
SrPt As
Superconductivity

ASJC Scopus subject areas

Physics and Astronomy(all)

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Kudo, K., Nishikubo, Y., & Nohara, M. (2010). Coexistence of superconductivity and charge density wave in SrPt ₂As₂. journal of the physical society of japan, 79(12), [123710]. https://doi.org/10.1143/JPSJ.79.123710

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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 470K and enters into a superconducting state at Tc = 5:2K. The coexistence of superconductivity and CDW refers to Peierls instability with a moderately strong electron-phonon interaction. Thus SrPt2As 2 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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