Precise pressure dependence of the superconducting transition temperature of FeSe: resistivity and 77Se-NMR study

DOI Web Site Web Site 被引用文献54件 参考文献26件
  • Masaki Satoru
    Department of Physics, Kobe University
  • Kotegawa Hisashi
    Department of Physics, Kobe University JST, Transformative Research-Project on Iron Pnictides (TRIP)
  • Hara Yudai
    Department of Physics, Kobe University
  • Tou Hideki
    Department of Physics, Kobe University JST, Transformative Research-Project on Iron Pnictides (TRIP)
  • Murata Keizo
    Division of Molecular Materials Science, Graduate School of Science, Osaka City University
  • Mizuguchi Yoshikazu
    National Institute for Materials Science University of Tsukuba JST, Transformative Research-Project on Iron Pnictides (TRIP)
  • Takano Yoshihiko
    National Institute for Materials Science University of Tsukuba JST, Transformative Research-Project on Iron Pnictides (TRIP)

書誌事項

タイトル別名
  • Precise Pressure Dependence of the Superconducting Transition Temperature of FeSe: Resistivity and <SUP>77</SUP>Se-NMR Study

この論文をさがす

抄録

We report the precise pressure dependence of FeSe from a resistivity measurement up to 4.15 GPa. Superconducting transition temperature (Tc) increases sensitively under pressure, but shows a plateau between 0.5–1.5 GPa. The maximum Tc, which is determined by zero resistance, is 21 K at approximately 3.5 GPa. The onset value reaches ∼37 K at 4.15 GPa. We also measure the nuclear spin–lattice relaxation rate 1⁄T1 under pressure using 77Se-NMR measurement. 1⁄T1 shows that bulk superconductivity is realized in the zero-resistance state. The pressure dependence of 1⁄T1T just above Tc shows a plateau as well as the pressure dependence of Tc, which gives clear evidence of the close relationship between 1⁄T1T and Tc. Spin fluctuations are suggested to contribute to the mechanism of superconductivity.

収録刊行物

被引用文献 (54)*注記

もっと見る

参考文献 (26)*注記

もっと見る

関連プロジェクト

もっと見る

キーワード

詳細情報 詳細情報について

問題の指摘

ページトップへ