<sup>75</sup>As NMR Study of Hole-Doped Superconductor Ba<sub>1-<i>x</i></sub>K<sub><i>x</i></sub>Fe<sub>2</sub>As<sub>2</sub> (<i>T</i><sub>c</sub>≃38 K)

DOI DOI Web Site BIBCODE 被引用文献28件 参考文献33件 オープンアクセス
  • Fukazawa Hideto
    Department of Physics, Chiba University JST, TRIP
  • Yamazaki Takehiro
    Department of Physics, Chiba University
  • Kondo Kenji
    Department of Physics, Chiba University
  • Kohori Yoh
    Department of Physics, Chiba University JST, TRIP
  • Takeshita Nao
    JST, TRIP National Institute of Advanced Industrial Science and Technology
  • Shirage Parasharam M.
    National Institute of Advanced Industrial Science and Technology
  • Kihou Kunihiro
    National Institute of Advanced Industrial Science and Technology
  • Miyazawa Kiichi
    National Institute of Advanced Industrial Science and Technology Department of Applied Electronics, Tokyo University of Science
  • Kito Hijiri
    JST, TRIP National Institute of Advanced Industrial Science and Technology
  • Eisaki Hiroshi
    JST, TRIP National Institute of Advanced Industrial Science and Technology
  • Iyo Akira
    JST, TRIP National Institute of Advanced Industrial Science and Technology

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タイトル別名
  • <SUP>75</SUP>As NMR Study of Hole-Doped Superconductor Ba<SUB>1−<I>x</I></SUB>K<I><SUB>x</SUB></I>Fe<SUB>2</SUB>As<SUB>2</SUB> (<I>T</I><SUB>c</SUB>\\simeq38 K)

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説明

We report the 75As nuclear magnetic resonance (NMR) measurement of the hole-doped superconductor Ba1−xKxFe2As2 with different lattice parameters and different superconducting volume fractions (Tc\\simeq38 K). 75As-NMR spectra revealed that the magnetically ordered and superconducting phases are microscopically separated. The spin-lattice relaxation rate 1⁄T1 in the normal state reflects the existence of a large two-dimensional antiferromagnetic spin fluctuation. The 1⁄T1 in the superconducting state down to the lowest measurement temperature T varies close to T3. In addition, it exhibits no coherence peak just below Tc. This shows a T dependence similar to those of other iron pnictides.

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