Superconductivity of the stuffed CdI2-type Pt1+xBi2

Kazutaka Kudo, Hoang Yen Nguyen, Chang Geun Oh, Kensuke Takaki, Minoru Nohara

Research output: Contribution to journalArticlepeer-review

Abstract

This study involved the synthesis of a novel compound, Pt1+xBi2, of which the structure was investigated using powder X-ray diffraction experiments and Rietveld analysis. These investigations confirmed a stuffed Cdl2-type structure (P3¯m1, D33d, No. 164), in which each Pt atom is coordinated by six Bi atoms to form a PtB16 octahedron, and these octahedra are connected by sharing edges to form a PtBi2 layer. The layers are stacked along the c-axis, and the excess Pt atoms partially occupy the interlayer formed by the octahedral interstices. Resistivity, magnetization, and specific heat measurements revealed the emergence of bulk superconductivity at 2.4 K in Ptj,2ôBi2-The triangular network of platinum and the structure composed of heavy elements that are expected to show strong spin-orbit coupling are anticipated to make this compound a useful platform for exploring exotic phenomena.

Original languageEnglish
Article number063706
Journaljournal of the physical society of japan
Volume90
Issue number6
DOIs
Publication statusPublished - Jun 15 2021

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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