A study of the doping dependence of Tc in Ba1- xKxFe2As2 and Sr1- xKxFe2As2 films grown by molecular beam epitaxy

T. Yamagishi, S. Ueda, S. Takeda, S. Takano, A. Mitsuda, M. Naito

研究成果: Contribution to journalArticle査読

11 被引用数 (Scopus)

抄録

Single-crystalline films of superconducting Ba1- xKxFe2As2 and Sr1- xKxFe2As2 were grown at temperatures below 350 °C under reduced As flux by molecular beam epitaxy. We performed a systematic study of the doping dependence of Tc in Ba 1-xKxFe2As2 for x = 0.0 to 1.0 and Sr1-xKxFe2As2 for x = 0.0 to 0.5. The highest Tcon (Tcend) so far attained is 38.3 K (35.5 K) at x ∼ 0.3 for Ba1-xKxFe2As 2, and 33.4 K (31.0 K) at x ∼ 0.4 for Sr1- xKxFe2As2. The optimum K-doping level inducing the highest Tc is different in the two systems. The implication of the results is briefly discussed.

本文言語英語
ページ(範囲)1177-1180
ページ数4
ジャーナルPhysica C: Superconductivity and its applications
471
21-22
DOI
出版ステータス出版済み - 11 2011

All Science Journal Classification (ASJC) codes

  • 電子材料、光学材料、および磁性材料
  • 凝縮系物理学
  • エネルギー工学および電力技術
  • 電子工学および電気工学

フィンガープリント

「A study of the doping dependence of T<sub>c</sub> in Ba<sub>1-</sub> <sub>x</sub>K<sub>x</sub>Fe<sub>2</sub>As<sub>2</sub> and Sr<sub>1-</sub> <sub>x</sub>K<sub>x</sub>Fe<sub>2</sub>As<sub>2</sub> films grown by molecular beam epitaxy」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

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