Superconductivity in novel BiS 2-based layered superconductor LaO 1-xF xBiS 2

Yoshikazu Mizuguchi, Satoshi Demura, Keita Deguchi, Yoshihiko Takano, Hiroshi Fujihisa, Yoshito Gotoh, Hiroki Izawa, Osuke Miura

Research output: Contribution to journalArticlepeer-review

387 Citations (Scopus)

Abstract

Layered superconductors have provided some interesting fields in condensed matter physics owing to the low dimensionality of their electronic states. For example, the high-T c (high transition temperature) cuprates and the Fe-based superconductors possess a layered crystal structure composed of a stacking of spacer (blocking) layers and conduction (superconducting) layers, CuO 2 planes or Fe-Anion layers. The spacer layers provide carriers to the conduction layers and induce exotic superconductivity. Recently, we have reported superconductivity in the novel BiS2-based layered compound Bi 4O 4S 3. It was found that superconductivity of Bi 4O 4S 3 originates from the BiS 2 layers. The crystal structure is composed of a stacking of BiS 2 superconducting layers and the spacer layers, which resembles those of high-T c cuprate and the Fe-based superconductors. Here we report a discovery of a new type of BiS2-based layered superconductor LaO 1-xF xBiS 2, with a T c as high as 10.6K.

Original languageEnglish
Article number114725
JournalJournal of the Physical Society of Japan
Volume81
Issue number11
DOIs
Publication statusPublished - Nov 2012
Externally publishedYes

Keywords

  • BiS -based superconductor
  • High pressure synthesis
  • Layered material
  • Structural analysis
  • Superconducting properties

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