Evolution of superconductivity in Fe1+yTe1-xSe x annealed in Te vapor

Yue Sun, Yuji Tsuchiya, Tatsuhiro Yamada, Toshihiro Taen, Sunseng Pyon, Zhixiang Shi, Tsuyoshi Tamegai

研究成果: Article査読

21 被引用数 (Scopus)

抄録

We report a detailed study of the Te vapor annealing effect in Fe 1+yTe0.6Se0.4 single crystals. Bulk superconductivity can be gradually induced by annealing with increasing amount of Te, until the molar ratio of Te to the sample reaches 1:10. By further increasing Te molar ratio, superconducting volume is gradually reduced. Resistivity and Hall effect measurements manifest that annealing in Te vapor delocalizes the charge carriers by removing excess Fe. The optimally Te annealed crystal shows homogeneous critical current densities with a large value of ∼4.3 x 105 A/cm2, which proves that the Te annealing is effective to induce bulk superconductivity in Fe1+yTe 1-xSex.

本文言語English
論文番号093705
ジャーナルjournal of the physical society of japan
82
9
DOI
出版ステータスPublished - 2013 9月
外部発表はい

ASJC Scopus subject areas

  • 物理学および天文学(全般)

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