Superconductivity of lanthanum hydride synthesized using AlH3 as a hydrogen source

Masafumi Sakata, Mari Einaga, Meng Dezhong, Toyoto Sato, Shin Ichi Orimo, Katsuya Shimizu

研究成果: Article査読

4 被引用数 (Scopus)

抄録

Hydrogen-rich compounds show high-Tc superconductivity related to dense hydrogen under extremely high pressure (above 100 GPa). A recent investigation to search for high-Tc superconductive hydrides has advanced a synthesis technique using infrared laser heating of a hydrogen source material under conditions of extremely high pressure and temperature. In order to find a suitable synthesis route for high-Tc superconductive hydrides, the selection of a hydrogen source material has to be considered. In this study, the synthesis of hydrogen-rich lanthanum hydrides (LaHx) was performed using aluminium trihydride (AlH3) as the hydrogen source. Simple lanthanum on AlH3 was pressurized at 150 GPa and heated by infrared laser irradiation. After the laser heating, superconductivity at Tc ∼ 70 K was observed at 170 GPa. This indicates that LaHx (x < 10) was synthesized using AlH3 as the hydrogen source under conditions of extremely high pressure.

本文言語English
論文番号abb204
ジャーナルSuperconductor Science and Technology
33
11
DOI
出版ステータスPublished - 2020 11
外部発表はい

ASJC Scopus subject areas

  • セラミックおよび複合材料
  • 凝縮系物理学
  • 金属および合金
  • 電子工学および電気工学
  • 材料化学

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