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arXiv · 1201.1070

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

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.

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Sunseng Pyon, Kazutaka Kudo, Minoru Nohara. 2012-01-05. Superconductivity in Pseudo-Binary Silicide SrNixSi2-x with AlB2-Type Structure. https://doi.org/10.1143/jpsj.81.023702

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