Zero resistivity above 150K in HgBa2Ca2Cu 3O8+δ at high pressure

Nao Takeshita, Ayako Yamamoto, Akira Iyo, Hiroshi Eisaki

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45 Citations (Scopus)

Abstract

We measured the electrical resistivity of a HgBa2Ca 2Cu3O8+δ (Hg-1223) polycrystalline sample under high pressure. Owing to the improved sample quality and the nearly hydrostatic pressure, we successfully observed zero resistivity, which is the unambiguous signature of superconductivity, up to the unprecedented temperature of 153.0K at 15 GPa. This temperature surpasses the previous records by more than 10 K. Referring to the experimental results, we established the exact pressure (P) vs superconducting transition temperature (Tc) relationship. Tc increases with P up to 15 GPa, suggesting the possibility of further enhancement of Tc at higher pressures.

Original languageEnglish
Article number023711
JournalJournal of the Physical Society of Japan
Volume82
Issue number2
DOIs
Publication statusPublished - 2013 Feb 1
Externally publishedYes

Keywords

  • Copper-oxide superconductors
  • Hg-1223
  • High pressure study

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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