Superconductivity in SrNi2As2 Single Crystals

E. D. Bauer; F. Ronning; B. L. Scott; J. D. Thompson

doi:10.1103/PhysRevB.78.172504

Superconductivity in SrNi2As2 Single Crystals

Superconductivity 2009-11-13 v1 Strongly Correlated Electrons

Authors: E. D. Bauer , F. Ronning , B. L. Scott , J. D. Thompson

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Abstract

The electrical resistivity \rho(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 \gamma= 8.7 mJ/mol K^2 and a small upper critical field H_{c2} \sim 200 Oe. No superconductivity was found in EuNi2As2 above 0.4 K, but anomalies in \rho and C reveal that magnetic order associated with the Eu^{2+} magnetic moments occurs at T_m = 14 K.

Keywords

single crystal superconductivity superconductivity high-temperature superconductivity

Cite

@article{arxiv.0808.1694,
  title  = {Superconductivity in SrNi2As2 Single Crystals},
  author = {E. D. Bauer and F. Ronning and B. L. Scott and J. D. Thompson},
  journal= {arXiv preprint arXiv:0808.1694},
  year   = {2009}
}

Comments

8 pages, 5 figures

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