Superconductivity in pseudo-binary silicide SrNi xSi 2-x with AlB 2-type structure

Sunseng Pyon; Kazutaka Kudo; Minoru Nohara

doi:10.1143/JPSJ.81.023702

Superconductivity in pseudo-binary silicide SrNi _xSi _2-x with AlB ₂-type structure

Sunseng Pyon, Kazutaka Kudo, Minoru Nohara

Graduate School of Natural Science and Technology

Research output: Contribution to journal › Article › peer-review

5 Citations (Scopus)

Abstract

We demonstrate the emergence of superconductivity in pseudo-binary silicide SrNi _xSi _2-x. The compound exhibits a structural phase transition from the cubic SrSi ₂-type structure (P4 ₁32) to the hexagonal AlB ₂-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.

Original language	English
Article number	023702
Journal	journal of the physical society of japan
Volume	81
Issue number	2
DOIs	https://doi.org/10.1143/JPSJ.81.023702
Publication status	Published - Feb 2012

Keywords

AlB -type structure
Alkaline-earth disilicide
SrSi
Superconductivity

ASJC Scopus subject areas

Physics and Astronomy(all)

Access to Document

10.1143/JPSJ.81.023702

Cite this

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title = "Superconductivity in pseudo-binary silicide SrNi xSi 2-x with AlB 2-type structure",

abstract = "We demonstrate the emergence of superconductivity in pseudo-binary silicide SrNi xSi 2-x. The compound exhibits a structural phase transition from the cubic SrSi 2-type structure (P4 132) to the hexagonal AlB 2-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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T1 - Superconductivity in pseudo-binary silicide SrNi xSi 2-x with AlB 2-type structure

AU - Pyon, Sunseng

AU - Kudo, Kazutaka

AU - Nohara, Minoru

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Y1 - 2012/2

N2 - We demonstrate the emergence of superconductivity in pseudo-binary silicide SrNi xSi 2-x. The compound exhibits a structural phase transition from the cubic SrSi 2-type structure (P4 132) to the hexagonal AlB 2-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.

AB - We demonstrate the emergence of superconductivity in pseudo-binary silicide SrNi xSi 2-x. The compound exhibits a structural phase transition from the cubic SrSi 2-type structure (P4 132) to the hexagonal AlB 2-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.

KW - AlB -type structure

KW - Alkaline-earth disilicide

KW - SrSi

KW - Superconductivity

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