Superconductivity in hexagonal BaPtAs: SrPtSb- and YPtAs-type structures with ordered honeycomb network

Kazutaka Kudo, Takaaki Takeuchi, Hiromi Ota, Yuki Saito, Shinya Ayukawa, Kazunori Fujimura, Minoru Nohara

Research output: Contribution to journalArticle

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Abstract

The crystal structure and superconductivity of hexagonal BaPtAs are reported. Single-crystal X-ray diffraction, magnetization, electrical resistivity, and specific heat measurements were performed in this study. Two hexagonal structures with different PtAs honeycomb network stacking sequences, namely, SrPtSb- (space group P6m2, D13 h, No. 187) and YPtAs-type (P63=mmc, D46 h, No. 194) structures, were identified and found to exhibit superconductivity at 2.8 and 2.1-3.0 K, respectively. In contrast, the cubic LaIrSi-type structure (P213, T 4, No. 198) did not exhibit superconductivity above 0.1 K. BaPtAs provides a unique opportunity to study superconductivity with broken and preserved spatial inversion symmetry.

Original languageEnglish
Article number073708
JournalJournal of the Physical Society of Japan
Volume87
Issue number7
DOIs
Publication statusPublished - Jan 1 2018

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superconductivity
heat measurement
specific heat
inversions
magnetization
electrical resistivity
crystal structure
single crystals
symmetry
diffraction
x rays

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Superconductivity in hexagonal BaPtAs : SrPtSb- and YPtAs-type structures with ordered honeycomb network. / Kudo, Kazutaka; Takeuchi, Takaaki; Ota, Hiromi; Saito, Yuki; Ayukawa, Shinya; Fujimura, Kazunori; Nohara, Minoru.

In: Journal of the Physical Society of Japan, Vol. 87, No. 7, 073708, 01.01.2018.

Research output: Contribution to journalArticle

Kudo, Kazutaka ; Takeuchi, Takaaki ; Ota, Hiromi ; Saito, Yuki ; Ayukawa, Shinya ; Fujimura, Kazunori ; Nohara, Minoru. / Superconductivity in hexagonal BaPtAs : SrPtSb- and YPtAs-type structures with ordered honeycomb network. In: Journal of the Physical Society of Japan. 2018 ; Vol. 87, No. 7.
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AU - Saito, Yuki

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AU - Fujimura, Kazunori

AU - Nohara, Minoru

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