Superconductivity in 4d and 5d transition metal layered pnictides BaRh 2P2, BaIr2P2 and SrIr 2As2

D. Hirai, T. Takayama, D. Hashizume, R. Higashinaka, Ayako Yamamoto, A. K. Hiroko, H. Takagi

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19 Citations (Scopus)

Abstract

Bulk superconductivity was discovered in BaRh2P2 (Tc=1.0K), BaIr2P2 (Tc=2.1K) and SrIr2As 2 (Tc=2.9K), which are isostructural to (Ba,K)Fe2As 2, indicative of the appearance of superconductivity over a wide variety of layered transition metal pnictides. The electronic specific heat coefficient in the normal state, 9.75, 6.86 and 7.03 mJ/(mol K2) for BaRh2P2, BaIr2P2 and SrIr 2As2 respectively, indicate that the electronic density of states of these three compounds are moderately large but smaller than those of Fe pnictide superconductors.

Original languageEnglish
JournalPhysica C: Superconductivity and its Applications
Volume470
Issue numberSUPPL.1
DOIs
Publication statusPublished - 2010 Dec
Externally publishedYes

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Keywords

  • BaIrP
  • BaRhP
  • SrIr As
  • Superconductivity
  • ThCrSi-type

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering

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