Work

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

Year: 2012

Type: article

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.

Source: Journal of the Physical Society of Japan

DOI: 10.1143/jpsj.81.023702

Authors: Sunseng Pyon, Kazutaka Kudo, Minoru Nohara

Institutions: Okayama University, Japan Science and Technology Agency

Language: English

Topic: Physics of Superconductivity and Magnetism

Subfield: Condensed Matter Physics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: green

Funder: Japan Society for the Promotion of Science

Award: Dopant ordering and enhancement of superconducting transition temperature induced by co-doping of iron-based superconductors