Superconductivity in Pseudo-Binary Silicide SrNixSi2-x with AlB2-Type Structure
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概要
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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 (P4_{1}32) 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.
- Physical Society of Japanの論文
- 2012-02-15
著者
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Kudo Kazutaka
Department Of Applied Physics Graduate School Of Engineering Tohoku University
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Nohara Minoru
Department Of Advanced Materials Science University Of Tokyo
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Kudo Kazutaka
Department of Physics, Faculty of Science, Okayama University, Okayama 700-8530, Japan
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PYON Sunseng
Department of Physics, Faculty of Science, Okayama University, Okayama 700-8530, Japan
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Pyon Sunseng
Department of Applied Physics, The University of Tokyo, Bunkyo, Tokyo 113-8656, Japan
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