Superconductivity in Pseudo-Binary Silicide SrNixSi2-x with AlB2-Type Structure

Sunseng Pyon; Kazutaka Kudo; Minoru Nohara

doi:10.1143/JPSJ.81.023702

Superconductivity in Pseudo-Binary Silicide SrNixSi2-x with AlB2-Type Structure

Superconductivity 2012-01-06 v1

Authors: Sunseng Pyon , Kazutaka Kudo , Minoru Nohara

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Abstract

We demonstrate the emergence of superconductivity in pseudo-binary silicide SrNixSi2-x. The compound exhibits a structural phase transition from the cubic SrSi2-type structure (P4132) to the hexagonal AlB2-type structure (P6/mmm) upon substituting Ni for Si at approximately x = 0.1. The hexagonal structure is stabilized in the range of 0.1 < x < 0.7. The superconducting phase appears in the vicinity of the structural phase boundary. Ni acts as a nonmagnetic dopant, as confirmed by the Pauli paramagnetic behavior.

Keywords

superconductivity high-temperature superconductivity electronic structure of materials

Cite

@article{arxiv.1201.1070,
  title  = {Superconductivity in Pseudo-Binary Silicide SrNixSi2-x with AlB2-Type Structure},
  author = {Sunseng Pyon and Kazutaka Kudo and Minoru Nohara},
  journal= {arXiv preprint arXiv:1201.1070},
  year   = {2012}
}

Comments

12 pages, 5 figures

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