Superconductivity inSrNi2As2single crystals

2008/08/12 by E. D. Bauer, F. Ronning, Brian L. Scott +2 · 5 citations
Chemistry · Materials Science · Physics and Astronomy · #Chemistry #Condensed matter physics #Crystallography #Iron-based superconductors research #Order (exchange) #Physics #Physics of Superconductivity and Magnetism #Rare-earth and actinide compounds #Superconductivity #cond-mat.str-el #cond-mat.supr-con

paper · pdf · doi:10.1103/physrevb.78.172504

8 pages, 5 figures

arxiv created 2008/08/12 · openalex publication_date 2008/11/07 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05

Abstract

The electrical resistivity \ensuremathρ(T) and heat capacity C(T) on single crystals of SrNi₂As₂ and EuNi₂As₂ are reported. While there is no evidence for a structural transition in either compound, SrNi₂As₂ is found to be a bulk superconductor at T_c=0.62 K with a Sommerfeld coefficient of \ensuremathγ=8.7 mJ/mol K² and a small upper critical field H_c2\ensuremath∼200 Oe. No superconductivity was found in EuNi₂As₂ above 0.4 K, but anomalies in \ensuremathρ and C reveal that magnetic order associated with the Eu²⁺ magnetic moments occurs at T_m=14 K.

Citations

• Strong-coupling superconductivity in the nickel-based oxypnictideLaNiAsO1−xFx
• Pressure-induced superconductivity in CaFe2As2
• Superconducting Fe-Based Compounds(A1−xSrx)Fe2As2withA=Kand Cs with Transition Temperatures up to 37 K
• High-temperature superconductivity inEu0.5K0.5Fe2As2
• Nickel-based phosphide superconductor with infinite-layer structure, BaNi2P2
• Electron-phonon superconductivity in LaNiPO
• Different resistivity response to spin-density wave and superconductivity at 20 K in Ca1−xNaxFe2As2
• Superconductivity at 38 K in the Iron Arsenide(Ba1−xKx)Fe2As2

Cited by

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• Superconductivity in 122-type antimonideBaPt2Sb2
• Multigap nodeless superconductivity in nickel chalcogenideTlNi<mml:mrow/>2Se<mml:mrow/>2
• Superconductivity in the ternary iridium–arsenide BaIr 2 As 2