Superconducting Phase at 7.7 K in the HgxReO3 Compound with a Hexagonal Bronze Structure

Kenya Ohgushi, Ayako Yamamoto, Yoko Kiuchi, Chandreyee Ganguli, Kazuyuki Matsubayashi, Yoshiya Uwatoko, Hidenori Takagi

研究成果: Article査読

6 被引用数 (Scopus)

抄録

We have successfully synthesized a new rhenium-based hexagonal bronze material, HgxReO3, which exhibits superconductivity with the transition temperature Tc=7.7K at ambient pressure and 11.1 K at 4 GPa. This compound is a superconductor with the highest Tc among hexagonal bronzes. Moreover, it presents the novel crystallographic feature that (Hg2)2+ polycations, in contrast to monatomic cations in known hexagonal bronzes, are incorporated into open channels. There is evidence that conducting electrons tightly couple with Hg-related phonons. Our results inspire detailed studies on the role of the rattling phonon in the occurrence of superconductivity in the hexagonal bronzes.

本文言語English
論文番号017001
ジャーナルPhysical review letters
106
1
DOI
出版ステータスPublished - 2011 1 4
外部発表はい

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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