NMR study of the vortex slush phase in organic superconductor κ-(BEDT-TTF) 2 Cu(NCS) 2

M. Urano, J. Tonishi, H. Inoue, T. Saito, T. Fujiwara, H. Chiku, A. Oosawa, T. Goto, T. Suzuki, T. Sasaki, N. Kobayashi, S. Awaji, K. Watanabe

研究成果: Article

3 引用 (Scopus)

抜粋

The vortex state in a single crystal of the layered organic superconductor κ-(BEDT- TTF)2 Cu(NCS) 2, where BEDT-TTF (or ET) is bis(ethylenedithio) tetrathiafulvalene, was studied by H-NMR 1. Under a low field region around 0.75 T, the vortex-glass-liquid transition was demonstrated by a diverging of the longitudinal nuclear spin relaxation rate and peak broadening in spectra. Under a high field region near the upper critical field Hc2 (0)7 T, the curvature of nuclear spin relaxation curves showed a drastic change at the temperature where the emergence of the quantum vortex slush state was reported. The mechanism in this curvature change was discussed in terms of the fluctuating field produced by fragments of vortex glass.

元の言語English
記事番号024505
ジャーナルPhysical Review B - Condensed Matter and Materials Physics
76
発行部数2
DOI
出版物ステータスPublished - 2007 7 11

    フィンガープリント

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

これを引用

Urano, M., Tonishi, J., Inoue, H., Saito, T., Fujiwara, T., Chiku, H., Oosawa, A., Goto, T., Suzuki, T., Sasaki, T., Kobayashi, N., Awaji, S., & Watanabe, K. (2007). NMR study of the vortex slush phase in organic superconductor κ-(BEDT-TTF) 2 Cu(NCS) 2. Physical Review B - Condensed Matter and Materials Physics, 76(2), [024505]. https://doi.org/10.1103/PhysRevB.76.024505